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I am wondering if it possible to allow both select dropdown list and a input textarea within the same sweet alert.

For example: my select list have 4 options and the last option is others. I want when user choose others and it will display a text area for the user to enter. I am using similar to what sweetalert 2 give as shown below.

 swal(
 title: 'Select field validation',
 input: 'select',
 inputOptions: 
 'apples': 'Apples',
 'bananas': 'Bananas',
 'grapes': 'Grapes',
 'Others': 'Others'
 ,
 inputPlaceholder: 'Select a fruit',
 showCancelButton: true,
 inputValidator: (value) => 
 return new Promise((resolve) => 
 if (value === 'oranges') 
 resolve()
 else 
 resolve('You need to select oranges :)')
 
 )
 
 )

 if (fruit) 
 swal('You selected: ' + fruit)
 

One possible way (if you want to keep using the input and inputValidator) is that you can use the html property of swal to add an hidden text input (e.g. using display: none):

html: '<input type="text" id="fruit-text" class="swal2-input" style="display: none;">',

Then you can use the onBeforeOpen to subscribe to change event on the input, e.g.:

onBeforeOpen: (dom) => 
 swal.getInput().onchange = function (event) 
 if (event.target.value === "Others") 
 dom.querySelector('#fruit-text').style.display = 'initial'
 else 
 dom.querySelector('#fruit-text').style.display = 'none'
 
 

,

An example of that can be found at https://south-carol.glitch.me/

Note that in this case, you should use the preConfirm to handle the status of the swal and return the value of the text input if needed (see source of the example at the url above)