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In our example, the class name is “paragraphClass” and button’s ID is “Button”. Tip: Learn more about the classList property in our JavaScript Reference. The following is the HTML code I used for this code snippet. Add class javascript - 3 ways. Note: If this parameter is empty, all class names will be removed. Toggle an Element Class in JavaScript The elem.classList is a special object with … JavaScript: Add/remove a single class on multiple elements. To remove several classes, separate the class names with space. To Remove vue-body-class. Adding & Removing CSS Classes With Vanilla Javascript function. Tip: Also see How To Remove A Class. Who are the certified experts? add It returns the new length of the array formed. To add multiple classes separate them with a space. If a class name is specified as a parameter, only that class will be removed from … It provides us with methods add() and remove() to add/remove classes from the classList. If the class exists, then it is removed. The correct approach is to construct the element using JavaScript’s createElement () method: Created a DIV element … Please help me with this. Tip: Learn more about the className property in our JavaScript Reference. Use jQuery removeClass() to Remove CSS Class From Element With jQuery. What I usually do, to avoid a flicker effect, is hide the body by CSS and show it by jQuery after all the scripts have run. It's removed straight-away because the button click propagates to the html element after your button click handler adds the class to body.