How to get Image File Size after Resizing image in Javascript?
up vote
2
down vote
favorite
Given the below script, I could be able to resize image to the maximum pre-define dimension of image, and it was displaying in the Canvas:
$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
this.src = canvas.toDataURL();
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>However, I would like to get the file size of resized image; it is not the width and the height.
How can I get the image file size after it was resized?
Thanks.
javascript
asked Nov 11 at 12:46
Houy Narun
244422
add a comment |
up vote
2
down vote
favorite
Given the below script, I could be able to resize image to the maximum pre-define dimension of image, and it was displaying in the Canvas:
$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
this.src = canvas.toDataURL();
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>However, I would like to get the file size of resized image; it is not the width and the height.
How can I get the image file size after it was resized?
Thanks.
javascript
asked Nov 11 at 12:46
Houy Narun
244422
add a comment |
up vote
2
down vote
favorite
up vote
2
down vote
favorite
Given the below script, I could be able to resize image to the maximum pre-define dimension of image, and it was displaying in the Canvas:
$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
this.src = canvas.toDataURL();
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>However, I would like to get the file size of resized image; it is not the width and the height.
How can I get the image file size after it was resized?
Thanks.
javascript
asked Nov 11 at 12:46
Houy Narun
244422
Given the below script, I could be able to resize image to the maximum pre-define dimension of image, and it was displaying in the Canvas:
$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
this.src = canvas.toDataURL();
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>However, I would like to get the file size of resized image; it is not the width and the height.
How can I get the image file size after it was resized?
Thanks.
$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
this.src = canvas.toDataURL();
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
this.src = canvas.toDataURL();
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>javascript
javascript
asked Nov 11 at 12:46
Houy Narun
244422
asked Nov 11 at 12:46
Houy Narun
244422
asked Nov 11 at 12:46
Houy Narun
244422
asked Nov 11 at 12:46
Houy Narun
244422
asked Nov 11 at 12:46
Houy Narun
244422
244422
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
accepted
You can calculate a rough size in bytes by doing newImageData.length * 3 / 4
$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
//Line added
var canvasData = canvas.toDataURL();
//Line edited
this.src = canvasData;
//Line added
console.log(canvasData.length * 3 / 4, ' bytes');
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>answered Nov 11 at 12:49
Bhaskar Choudhary
1158
it does not work atnewImageData.lengthCannot read property 'length' of undefined. Thanks
– Houy Narun
Nov 11 at 12:55
I'm correcting it.
– Bhaskar Choudhary
Nov 11 at 12:55
Check if the size is computed correctly or not :). Side note - For some reason onload function is being executed multiple times on my browser.
– Bhaskar Choudhary
Nov 11 at 13:18
On my windows pc, I right clicked and saved the image file and checked its size it showed Size: 15.0 KB (15,408 bytes) while the computed size is 15,425 bytes. This is what I meant by rough size.
– Bhaskar Choudhary
Nov 11 at 13:20
1
I solved that by defining variablecanvasoutsideimg.onload=function().., it works for me. Thanks for your help me :)
– Houy Narun
Nov 11 at 15:55
|
show 2 more comments
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
You can calculate a rough size in bytes by doing newImageData.length * 3 / 4
$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
//Line added
var canvasData = canvas.toDataURL();
//Line edited
this.src = canvasData;
//Line added
console.log(canvasData.length * 3 / 4, ' bytes');
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>answered Nov 11 at 12:49
Bhaskar Choudhary
1158
it does not work atnewImageData.lengthCannot read property 'length' of undefined. Thanks
– Houy Narun
Nov 11 at 12:55
I'm correcting it.
– Bhaskar Choudhary
Nov 11 at 12:55
Check if the size is computed correctly or not :). Side note - For some reason onload function is being executed multiple times on my browser.
– Bhaskar Choudhary
Nov 11 at 13:18
On my windows pc, I right clicked and saved the image file and checked its size it showed Size: 15.0 KB (15,408 bytes) while the computed size is 15,425 bytes. This is what I meant by rough size.
– Bhaskar Choudhary
Nov 11 at 13:20
1
I solved that by defining variablecanvasoutsideimg.onload=function().., it works for me. Thanks for your help me :)
– Houy Narun
Nov 11 at 15:55
|
show 2 more comments
up vote
0
down vote
accepted
You can calculate a rough size in bytes by doing newImageData.length * 3 / 4
$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
//Line added
var canvasData = canvas.toDataURL();
//Line edited
this.src = canvasData;
//Line added
console.log(canvasData.length * 3 / 4, ' bytes');
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>answered Nov 11 at 12:49
Bhaskar Choudhary
1158
it does not work atnewImageData.lengthCannot read property 'length' of undefined. Thanks
– Houy Narun
Nov 11 at 12:55
I'm correcting it.
– Bhaskar Choudhary
Nov 11 at 12:55
Check if the size is computed correctly or not :). Side note - For some reason onload function is being executed multiple times on my browser.
– Bhaskar Choudhary
Nov 11 at 13:18
On my windows pc, I right clicked and saved the image file and checked its size it showed Size: 15.0 KB (15,408 bytes) while the computed size is 15,425 bytes. This is what I meant by rough size.
– Bhaskar Choudhary
Nov 11 at 13:20
1
I solved that by defining variablecanvasoutsideimg.onload=function().., it works for me. Thanks for your help me :)
– Houy Narun
Nov 11 at 15:55
|
show 2 more comments
up vote
0
down vote
accepted
up vote
0
down vote
accepted
You can calculate a rough size in bytes by doing newImageData.length * 3 / 4
$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
//Line added
var canvasData = canvas.toDataURL();
//Line edited
this.src = canvasData;
//Line added
console.log(canvasData.length * 3 / 4, ' bytes');
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>answered Nov 11 at 12:49
Bhaskar Choudhary
1158
You can calculate a rough size in bytes by doing newImageData.length * 3 / 4
$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
//Line added
var canvasData = canvas.toDataURL();
//Line edited
this.src = canvasData;
//Line added
console.log(canvasData.length * 3 / 4, ' bytes');
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
//Line added
var canvasData = canvas.toDataURL();
//Line edited
this.src = canvasData;
//Line added
console.log(canvasData.length * 3 / 4, ' bytes');
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>$(function()
$("#file_select").change(function(e)
var fileReader = new FileReader();
fileReader.onload = function(e)
var img = new Image();
img.onload = function()
var MAX_WIDTH = 100;
var MAX_HEIGHT = 100;
var width = img.width;
var height = img.height;
if (width > height)
if (width > MAX_WIDTH)
height *= MAX_WIDTH / width;
width = MAX_WIDTH;
else
if (height > MAX_HEIGHT)
width *= MAX_HEIGHT / height;
height = MAX_HEIGHT;
var canvas = document.createElement("canvas");
canvas.setAttribute('id', 'canvas')
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(this, 0, 0, width, height);
//Line added
var canvasData = canvas.toDataURL();
//Line edited
this.src = canvasData;
//Line added
console.log(canvasData.length * 3 / 4, ' bytes');
document.body.appendChild(this); //remove this if you don't want to show it
img.src = e.target.result;
fileReader.readAsDataURL(e.target.files[0]);
// console.log('file size after resized is...');
);
);<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script>
<script src="http://malsup.github.com/jquery.form.js"></script>
<h1 class="logo">Upload Picture</h1>
<div id="upload_form_div">
<form id="upload_form" method="POST" enctype="multipart/form-data" action="upload">
<input type="file" name="file" capture="camera" id="file_select" />
</form>
</div>
<div id="loading" style="display:none;">
Uploading your picture...
</div>answered Nov 11 at 12:49
Bhaskar Choudhary
1158
edited Nov 11 at 13:11
answered Nov 11 at 12:49
Bhaskar Choudhary
1158
answered Nov 11 at 12:49
Bhaskar Choudhary
1158
answered Nov 11 at 12:49
Bhaskar Choudhary
1158
1158
it does not work atnewImageData.lengthCannot read property 'length' of undefined. Thanks
– Houy Narun
Nov 11 at 12:55
I'm correcting it.
– Bhaskar Choudhary
Nov 11 at 12:55
Check if the size is computed correctly or not :). Side note - For some reason onload function is being executed multiple times on my browser.
– Bhaskar Choudhary
Nov 11 at 13:18
On my windows pc, I right clicked and saved the image file and checked its size it showed Size: 15.0 KB (15,408 bytes) while the computed size is 15,425 bytes. This is what I meant by rough size.
– Bhaskar Choudhary
Nov 11 at 13:20
1
I solved that by defining variablecanvasoutsideimg.onload=function().., it works for me. Thanks for your help me :)
– Houy Narun
Nov 11 at 15:55
|
show 2 more comments
it does not work atnewImageData.lengthCannot read property 'length' of undefined. Thanks
– Houy Narun
Nov 11 at 12:55
I'm correcting it.
– Bhaskar Choudhary
Nov 11 at 12:55
Check if the size is computed correctly or not :). Side note - For some reason onload function is being executed multiple times on my browser.
– Bhaskar Choudhary
Nov 11 at 13:18
On my windows pc, I right clicked and saved the image file and checked its size it showed Size: 15.0 KB (15,408 bytes) while the computed size is 15,425 bytes. This is what I meant by rough size.
– Bhaskar Choudhary
Nov 11 at 13:20
1
I solved that by defining variablecanvasoutsideimg.onload=function().., it works for me. Thanks for your help me :)
– Houy Narun
Nov 11 at 15:55
it does not work at
newImageData.length Cannot read property 'length' of undefined. Thanks– Houy Narun
Nov 11 at 12:55
it does not work at
newImageData.length Cannot read property 'length' of undefined. Thanks– Houy Narun
Nov 11 at 12:55
I'm correcting it.
– Bhaskar Choudhary
Nov 11 at 12:55
I'm correcting it.
– Bhaskar Choudhary
Nov 11 at 12:55
Check if the size is computed correctly or not :). Side note - For some reason onload function is being executed multiple times on my browser.
– Bhaskar Choudhary
Nov 11 at 13:18
Check if the size is computed correctly or not :). Side note - For some reason onload function is being executed multiple times on my browser.
– Bhaskar Choudhary
Nov 11 at 13:18
On my windows pc, I right clicked and saved the image file and checked its size it showed Size: 15.0 KB (15,408 bytes) while the computed size is 15,425 bytes. This is what I meant by rough size.
– Bhaskar Choudhary
Nov 11 at 13:20
On my windows pc, I right clicked and saved the image file and checked its size it showed Size: 15.0 KB (15,408 bytes) while the computed size is 15,425 bytes. This is what I meant by rough size.
– Bhaskar Choudhary
Nov 11 at 13:20
1
1
I solved that by defining variable
canvas outside img.onload=function().., it works for me. Thanks for your help me :)– Houy Narun
Nov 11 at 15:55
I solved that by defining variable
canvas outside img.onload=function().., it works for me. Thanks for your help me :)– Houy Narun
Nov 11 at 15:55
|
show 2 more comments
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