jGE-WebTurtle/turtle.html at master · C0618C/jGE-WebTurtle · GitHub

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

<head>
    <meta charset="UTF-8">
    <title>Turtle Maker</title>
    <style>
        * {
            padding: 0px;
            margin: 0px;
        }
        body{width:100%;}
        #main{
            width:300px;
            margin: 100px auto;
        }
        #main i {
            display: inline-block;
            width: 5px;
            height: 5px;
            background-color: black;
            float: left;
        }
        #main i:hover{
            background-color: gray;cursor: pointer;
        }
    </style>
</head>

<body>
    <div id="main">

    </div>
    <script>
        (function () {
            let m = document.getElementById("main");
            let htmlString = [];
            for (let i = 0; i < 4020; i++) {
                htmlString.push(`<i></i>`);
            }
            m.innerHTML = htmlString.join("");

            let is = document.getElementsByTagName("i");
            [...is].forEach((i)=>{
                i.onclick=function(){
                    let curColor = i.style.backgroundColor;
                    if(curColor == "black" || curColor == ""){
                        i.style.backgroundColor = "white";
                    }else{
                        i.style.backgroundColor = "black";
                    }
                }
            })

        })();

    </script>

</body>

</html>