Javascript_practice/18.eventListner.html at main · DivyamGarg-code/Javascript_practice · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        .main_container{
            height: 100vh;
            width: 100vw;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 20px;
        }
        .btn_box{
            width: fit-content;
            height: fit-content;
            padding: 10px;
            border-radius: 8px;
            cursor: pointer;
        }

        .box1{
            color: rgb(255, 255, 255);
            background-color: rgba(0, 0, 0, 0.623);
            font-size: 20px;
        }
        .box2{
            background-color: rgba(128, 128, 128, 0.351);
            color: black;
            font-size: 18px;
        }
    </style>
</head>

<body>
    <div class="main_container">
        <div class="box1 btn_box">Current Color : <span class="current-color">rgb(255,255,255)</span></div>
        <div class="box2 btn_box">Change Background Color</div>
    </div>
    <!-- <button class="btn" id="btn1">Click 1</button>
    <button class="btn" id="btn2">Click 2</button>
    <button class="btn" id="btn3">Click 3</button> -->
    <script src="https://code.jquery.com/jquery-3.7.0.js"
        integrity="sha256-JlqSTELeR4TLqP0OG9dxM7yDPqX1ox/HfgiSLBj8+kM=" crossorigin="anonymous"></script>
    <!-- <script src="17.promises.js"></script> -->
    <script>
        function randomColorGenerator(){
            const red=Math.floor(Math.random()*256);
            const green=Math.floor(Math.random()*256);
            const blue=Math.floor(Math.random()*256);
            const randomColor=`rgb(${red},${green},${blue})`;
            return randomColor;
        }
        const body=document.body;
        const mainButton=document.querySelector(".box2");
        const current_color=document.querySelector(".current-color");
        mainButton.addEventListener("click",(e)=>{
            const randomColor=randomColorGenerator();
            body.style.backgroundColor=randomColor;
            current_color.textContent=randomColor;
            // we know the value of red,green, and blue goes from 0 to 255 in rgb(.....) Therfore using the Math.floor(Math.random()*255) we can get numbers from 0 to 255
        })


        // ------------------------------------------------------------
        const allButtons = document.querySelectorAll(".btn");
        console.log(allButtons);
        allButtons.forEach((button) => {
            button.addEventListener('click', (e) => {
                e.target.style.backgroundColor="black";
                e.target.style.color="white";
                console.log(e.currentTarget.textContent);
            })
        })
        //-----------------------------------------------------
    </script>
</body>

</html>