Hide and Show all Divs using JavaScript

In this tutorial we will learn how to Hide and Show all Divs using JavaScript. For this we can use .getElementsByTagName() method along with for loop and .display property.


HTML Code is given below, in this we have three div tags and a button tag with onclick event to trigger a JavaScript function.

<!DOCTYPE html>
<html lang="en">
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Hide/Show all Divs</title>
    <div style="height:100px;margin:10px;background-color:red;">
    <div style="height:100px;margin:10px;background-color:green;">
    <div style="height:100px;margin:10px;background-color:blue;">
    <button onclick="hideShow()">Hide/Show All</button>

JavaScript Code

Take a look at the JavaScript code given below. On button click a function is executed which hides all the div elements and on second click all divs are displayed again.

For this we have used for loop to target each div one by one.

var allDiv = document.getElementsByTagName('div');
var display = 0;
function hideShow()
if(display == 1)
for(var i = 0; i < allDiv.length; i++){
allDiv[i].style.display = 'block';
display = 0;    
else {
for(var i = 0; i < allDiv.length; i++){    
allDiv[i].style.display = 'none';
display = 1;    


Video Tutorial

Watch video tutorial on How To Hide and Show all Divs using JavaScript.

Change font-size using JavaScript Get Font Size of any Tag using JavaScript Change Position of HTML Element using JavaScript How to Change Image on Hover with JavaScript How to Disable Button by Class Name in JavaScript How To Change Image Size with JavaScript How to change Image opacity with JavaScript How to Change image src on click with JavaScript How to get the lang attribute value in JavaScript How to Get attribute Value using JavaScript How To Check if Attribute Exists or not with JavaScript How To Count number of links on Page with JavaScript How To Scroll Page to Bottom using JavaScript How To Detect Shift Key Press with JavaScript Change Text Color On Hover with JavaScript Hide and Show div using JavaScript Get Button text with JavaScript Get textarea value with JavaScript Get table row Height with JavaScript Auto Increase width of input field with JavaScript Set Textarea maxLength with JavaScript Set Textarea Value with JavaScript JavaScript Count list items JavaScript set input field value Count Button Clicks with JavaScript Scroll Page to the Top on Click with JavaScript