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has class function - vanilla JS. Check if element has specified class
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| // hasClass, takes two params: element and classname | |
| function hasClass(el, cls) { | |
| return el.className && new RegExp("(\\s|^)" + cls + "(\\s|$)").test(el.className); | |
| } | |
| /* use like below */ | |
| // Check if an element has class "foo" | |
| if (hasClass(element, "foo")) { | |
| // Show an alert message if it does | |
| alert("Element has the class!"); | |
| } |
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