Verify whether the text field is filled or not excluding the placeholder

How can I detect if a div is empty except for the placeholder element/value?

Scenario 1: Div is empty

<div id="textarea"  contenteditable="true">
    <span id="textarea-placeholder" data-text="Enter comment"></span>
</div>

Scenario 2: Div has content

<div id="textarea"  contenteditable="true">
    <span id="textarea-placeholder" data-text="Enter comment"></span>
    abc text inside div
    <a></a> //other elements
    <p></p> // other elements
</div>

Tried solutions:

$("#textarea").text().length) == 0

$('#textarea').find('*').not('.textarea-placeholder').is(':empty');
javascripthtmljquerycss

Answer №1

If you want to check for emptiness, consider using the .not() method

var isFirstEmpty = ($('#textarea *').not('#textarea-placeholder').length == 0);
console.log('Is empty: ' + isFirstEmpty);
var isSecondEmpty = ($('#textarea2 *').not('#textarea-placeholder2').length == 0);
console.log('Is empty: ' + isSecondEmpty);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<div id="textarea"  contenteditable="true">
  <span id="textarea-placeholder" data-text="Enter comment"></span>
</div>

<div id="textarea2"  contenteditable="true">
  <span id="textarea-placeholder2" data-text="Enter comment"></span>
  abc text inside div
  <a></a>
  <p></p>
</div>

Answer №2

My function also takes into account text nodes, so if the div contains any text it will not be considered empty

function checkEmptyExceptPlaceholder(query) {
  const otherElements = $(query).contents().filter(function() {
    if (this.nodeType == 3) // Text nodes
      return !!this.wholeText.trim(); // Blank text nodes are ignored
    return this.id !== 'textarea-placeholder';
  });
  return !otherElements.length;
}

// Only has a placeholder, so should return true
console.log('is textarea1 empty? ', checkEmptyExceptPlaceholder('#textarea1'));

// Has a placeholder, text, and additional elements, so should return false
console.log('is textarea2 empty? ', checkEmptyExceptPlaceholder('#textarea2'));

// Includes a placeholder, text, but no extra elements, yet should still return false
console.log('is textarea3 empty? ', checkEmptyExceptPlaceholder('#textarea3'));
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<div id="textarea1" contenteditable="true">
  <span id="textarea-placeholder" data-text="Enter comment"></span>
</div>

<div id="textarea2" contenteditable="true">
  <span id="textarea-placeholder" data-text="Enter comment"></span> abc text inside div
  <a></a> //other elements
  <p></p> // other elements
</div>

<div id="textarea3" contenteditable="true">
  <span id="textarea-placeholder" data-text="Enter comment"></span> abc text inside div
</div>

Answer №3

One solution is to utilize javaScript in this scenario

if (document.getElementById("text").value == "") {
  console.log('No text')
}
<textarea name="" id="text" cols="30" rows="10></textarea>

Take a look at the Fiddle here

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