After using JavaScript code you can add or remove the class name if you wish to hide or show the element respectively. The advantage is the element will be present in the DOM all the time but in a non-visible manner if it is in hidden state. @Jayaprakash – This is the most correct...
Sometimes, we need to highlight the HTML element when we click it and make it normal when we click outside the HTML element. We can achieve it by toggling the class in the element. Here, the meaning of the toggling class is adding and removing the class....
It checks to see if the element has the class, but it reverts the expression meaning it will run if the element doesn’t have a class. The ‘‘ is in-fact adding a space before the class so it doesn’t join another class. Using a bang (!) you can invert it’s meaning, so ...