Enabling auto-expansion for textareas with every keystroke

Currently, I have implemented the following script:

 jQuery.each(jQuery('textarea[data-autoresize]'), function() {
     var offset = this.offsetHeight - this.clientHeight;

     var resizeTextarea = function(el) {
         jQuery(el).css('height', 'auto').css('height', el.scrollHeight + offset);
     };

     jQuery(this).on('keyup input', function() {
         resizeTextarea(this); }).removeAttr('data-autoresize'); 
     });
  });

In addition, here is a snippet of my HTML code:

<h:inputTextarea id="newUserIds" value="#{surveyAction.newUsers}"
 cols="41" rows="10" onkeyup="AutoGrowTextArea(this)"
styleClass="animated">
   <p:ajax event="blur" process="@this" immediate="true" />
</h:inputTextarea>

I am seeking guidance on how to specifically target that textarea in the JavaScript so that the desired action only affects that particular element.

Answer №1

Your current jQuery selector is not targeting the textarea element.

To fix this issue, you can switch the jQuery selector from textarea[data-autoresize] to #newUserIds. Another option is to modify your textarea tag and include the attribute data-autoresize (recommended):

<h:inputTextarea id="newUserIds" value="#{surveyAction.newUsers}" cols="41" rows="10" onkeyup="AutoGrowTextArea(this)" styleClass="animated">

Answer №2

Consider using a contenteditable div instead of other methods. To pass the values to your backend component, utilize an input field with type="hidden".

Check out this example - http://jsfiddle.net/abc123def/9/

CSS Styles -

.edit-content{
    overflow-x:auto;
    border:1px solid #CCC;
    min-height: 100px;
    resize: both;
}

HTML Markup-

<div contenteditable="true" class="edit-content" id="editableArea">
</div>

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