JavaScript/addeventlistener1.html at master · vishal-vaish/JavaScript · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="red">
        <div id="green">
            <div id="blue"></div>
        </div>
    </div>
</body>
</html>
<style>
    #red{
        height: 200px;
        width: 400px;
        background-color: red;
    }
    #green{
        height: 100px;
        width: 200px;
        background-color: green;
    }
    #blue{
        height: 50px;
        width: 100px;
        background-color: blue;
    }
</style>
<script>
const red=document.getElementById("red");
const green=document.getElementById("green");
const blue=document.getElementById("blue");

red.addEventListener('click',()=>{
    alert("red");
})
green.addEventListener('focus',(event)=>{
    event.stopPropagation();
    alert("green");
})
blue.addEventListener('click',()=>{
    alert("blue");
})


</script>