CODEWITHSUNDEEP
javascriptjquery
Bishak
Bishak

Reputation: 83

checking to have the matched class names and do something

i want to check if i have elements with a matched className that is being dynamically generated and apply some code in this case :

say:

<div class="c red"></div>
<div class="c green"></div>
<div class="c red"></div>
<div class="c yellow"></div>
<div class="c red"></div>

i want to check if for those tags that has class "red" and apply something to them but keep in mind that i cant call the $(".red") element directly because it can vary each time the page load and become diffrent color next time , so i want a generic solution to check if there is a match in class names in the document

Upvotes: 1

Views: 455

Answers (1)

jAndy
jAndy

Reputation: 235962

Using jQuery:

$('div.c').each(function(_, div) {
    if( $(div).hasClass( 'red' ) ) {
        // this div node has a class called 'red'
    }
});

You can either use .hasClass() or .is() to determine that. Be aware that when using .is() you need to qualify the string with a leading dot, like '.red'.

Using vanilla Javascript:

[].forEach.call( document.querySelectorAll( 'div.c' ), function( div ) {
    if( div.classList.contains( 'red' ) ) {
        // this div node has a class called 'red'
    }
});

Upvotes: 2

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