Jquery: Checking to see if div contains text, then action

I'm trying to check in jQuery if a div contains some text, and then add a class if it does.

So I wrote something like this:

    if( $("#field > div.field-item").text().indexOf('someText') = 0) {
    	$("#somediv").addClass("thisClass");
	}

I'm not getting this to work.

<div id="field"><div class="field-item">someText</div></div>

<div id="somediv"></div>

Is this incorrect?

Your code contains two problems:

• The equality operator in JavaScript is ==, not =.
• jQuery.text() joins all text nodes of matched elements into a single string. If you have two successive elements, of which the first contains 'some' and the second contains 'Text', then your code will incorrectly think that there exists an element that contains 'someText'.

I suggest the following instead:

if ($('#field > div.field-item:contains("someText")').length > 0) {
    $("#somediv").addClass("thisClass");
}

Yes, I now made think for me. And it works fine!!!

if($("div:contains('CONGRATULATIONS')").length)
						{
							$('#SignupForm').hide(500);
						}

if( $("#field > div.field-item").text().indexOf('someText') >= 0)

Some browsers will include whitespace, others won't. >= is appropriate here. Otherwise equality is double equals ==

Ayman is right but, you can use it like that as well :

if( $("#field > div.field-item").text().indexOf('someText') >= 0) {
        $("#somediv").addClass("thisClass");
    }

Why not simply

var item = $('.field-item');
for (var i = 0; i <= item.length; i++) {
       if ($(item[i]).text() == 'someText') {
             $(item[i]).addClass('thisClass');
             //do some other stuff here
          }
     }

Here's a vanilla Javascript solution in 2020:

const fieldItem = document.querySelector('#field .field-item')
fieldItem.innerText === 'someText' ? fieldItem.classList.add('red') : '';

You might want to try the contains selector:

if ($("#field > div.field-item:contains('someText')").length) {
    $("#somediv").addClass("thisClass");
}

Also, as other mentioned, you must use == or === rather than =.

This should work and is case insensitive

function has_text(selector, text){
    text = text.toLowerCase();
    return selector.text().toLowerCase().indexOf(text) > -1
}

// for test
var exists = has_text($('#test_id'), 'hello');
console.log(exists)

HTML

<div id="field"><div class="field-item">someText</div></div>
<div id="somediv"></div>

JS

 $( document ).ready(function() {
 if ($('div.field-item:contains("someText")').length > 0) {

$('div#somediv').append("<p>someText was there, so class 'thisClass' was added").addClass("thisClass")
.css("border","2px red");
  }
});

JSfiddle:

> https://jsfiddle.net/Loqctuaf/