by Sai gowtham

Hide the all elements by class using JavaScript

In this tutorial, we are going to learn about how to hide the all elements by class using JavaScript.

Consider, we have a following html elements.

<div class="container">
   <div class="box">box 1</div>
   <div class="box">box 2</div>
   <div class="box">box 3</div>
</div>

Now, we need to hide the above elements by using the classname box.

Hiding all elements by class

To hide all elements by class in JavaScript:

  1. First, we need to access the elements inside the JavaScript using the document.getElementsbyClassName() method.

  2. Iterate over the each class using for..of loop.

  3. Then set its style.display property to none.

Here is an example:

<div class="container">
   <div class="box">box 1</div>
   <div class="box">box 2</div>
   <div class="box">box 3</div>
</div>
const elements = document.getElementsbyClassName("box");

for (const el of elements){
    el.style.display= "none";
}

Using style.visibility property

Similarly, we can also hide all elements by a specific class by using the element’s style.visibility property.

Here is an example:

const element = document.getElementsbyClassName("box");

for (const el of elements){
    element.style.visibility= "hidden";
}

In the example above:

First, we have accessed the html element using the document.getElementsbyClassName() method then on each iteration we are updating the element’s style.visibility property to hidden. so it hides the element from a dom.

The main difference between style.display and style.visibility properties are:

  • When we set a style.display property to none, it removes the element completely from the dom .

  • When we set a style.display property to hidden, it just hides the element but doesn’t remove it in the dom.

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