Question

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?

Answer 1

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");
}