lovecoding
/
web0715


			
				
					
						
						
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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>
        ul{
            margin: 0;
            padding: 0;
            display: flex;
        }
        li{
            list-style: none;
            width: 100px;
            height: 50px;
            background-color: #aaa;
            text-align: center;
            line-height: 50px;
            font-weight: bold;
            color: #fff;
        }
        .active{
            background-color: #000;
        }
    </style>
</head>
<body>
    <ul>
        <li class="active">fist</li>
        <li>second</li>
        <li>third</li>
    </ul>
    <script>
        let aLi = document.querySelectorAll("li");
        let arr = ['first','second','third'];
        for(let i = 0;i<aLi.length;i++){
            // aLi[i].index = i;
            aLi[i].onclick = function(){
                for(let j=0;j<aLi.length;j++){
                    aLi[j].className = "";
                }
                this.className = "active";
                // console.log(i);
                location.hash = arr[i];
                // console.log(arr[this.index]);
                // location.hash = arr[this.index]
            }
        }

        window.onhashchange = function(){
            // console.log(location.hash)
            let thisHas = location.hash.substr(1);
            // console.log(thisHas);
            // console.log(arr.indexOf(thisHas));
            let thisIndex =  arr.indexOf(thisHas)
            for(let i =0;i<aLi.length;i++){
                aLi[i].className = "";
            }
            aLi[thisIndex].className = "active";

        }
    </script>
</body>
</html>