ajberry ajberry - 5 months ago 10
jQuery Question

jQuery - determine if input element is textbox or select list

How would I determine whether the element returned by an :input filter in jQuery is a textbox or select list?

I want to have a different behavior for each ( textbox returns text value, select returns both key and text)

Example setup:

<div id="InputBody">
<div class="box">
<span id="StartDate">
<input type="text" id="control1">
</span>
<span id="Result">
<input type="text" id="control2">
</span>
<span id="SelectList">
<select>
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
</select>
</span>
</div>
<div class="box">
<span id="StartDate">
<input type="text" id="control1">
</span>
<span id="Result">
<input type="text" id="control2">
</span>
<span id="SelectList">
<select>
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
</select>
</span>
</div>




and then the script:

$('#InputBody')
// find all div containers with class = "box"
.find('.box')
.each(function () {
console.log("child: " + this.id);

// find all spans within the div who have an id attribute set (represents controls we want to capture)
$(this).find('span[id]')
.each(function () {
console.log("span: " + this.id);

var ctrl = $(this).find(':input:visible:first');

console.log(this.id + " = " + ctrl.val());
console.log(this.id + " SelectedText = " + ctrl.find(':selected').text());

});

Answer

You could do this:

if( ctrl[0].nodeName.toLowerCase() === 'input' ) {
    // it was an input
}

or this, which is slower, but shorter and cleaner:

if( ctrl.is('input') ) {
    // it was an input
}

If you want to be more specific, you can test the type:

if( ctrl.is('input:text') ) {
    // it was an input
}
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