console 命令行工具 X clear

console

 let search = document.getElementById("searchInput");
    search.onfocus = () => {
        document.getElementsByClassName("maskLayer")[0].style.display = "block";
        var searchArr;
        if (localStorage.search) {
            searchArr = localStorage.search.split(",");
            console.log(searchArr)
            for(let i =0;i<searchArr.length;i++){
                let li = document.createElement('li');
                li.innerText = searchArr[i];
                document.getElementsByClassName('select-list')[0].appendChild(li);
            }

        } else {
            searchArr = [];
        }
    }
    search.onblur = function () {
        document.getElementsByClassName("maskLayer")[0].style.display = "none";
    };
    function searchFor(data) {
        let search_val = document.getElementById("searchInput").value;
        let searchArr;
        if(localStorage.search){
            searchArr = localStorage.search.split(",");
        }else{
            searchArr =[];
        }
        searchArr.push(search_val)
        localStorage.search = searchArr;
        //location.reload();
        document.getElementsByClassName('select-list')[0].innerHTML='';
    }
    function clearHistory(data) {
        console.log('清除历史记录:'+localStorage.search);
        document.getElementsByClassName('select-list')[0].innerHTML='';
        localStorage.removeItem('search');
    }

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>测试页面</title>
    <link type="text/css" rel="stylesheet" href="styles/main.css">
</head>
<body>
<div class="app-container">
    <div class="maskLayer"></div>
    <div class="search-div">
        <input id="searchInput" type="text" placeholder="搜索您想要查询的项目"/>
        <div class="search-drop-history">
            <div class="select-list">
            </div>
            <div class="search-btn" onclick="searchFor(this)">搜索</div>
            <div class="clear-btn" onclick="clearHistory(this)">清除历史记录</div>
        </div>
    </div>
</div>
<script src="scripts/main.js"></script>
<script>
   
</script>
</body>
</html>

body {
            background-color: wheat;
            margin: 0;
            padding: 0;
        }

        .app-container {
            width: 100vw;
            height: 100vh;

            background-color: chocolate;
        }

        .search-div {
            width: 600px;
            position: absolute;
            z-index: 10000;
            left: 50%;
            top: 32%;
            transform: translate(-50%, 0);
        }

        #searchInput {
            width: 100%;
            height: 38px;
            font-size: 24px;
            border-radius: 10px;
            box-sizing: border-box;
        }

        .search-drop-history {
            border-radius: 10px;
            background-color: white;
            margin: 4px;
        }

        .maskLayer {
            background-color: #000;
            width: 100%;
            height: 100%;
            z-index: 2;
            position: absolute;
            text-align: center;
            display: none;
            opacity: 0.7;
        }
        .clear-btn{
            width: 102px;
            height: 30px;
            cursor: pointer;
            right: 0;
            background-color: #0f9d58;
            border: 2px solid lightslategray;
            position: absolute;
            border-radius: 14px;
        }
        .search-btn{
            width: 40px;
            height: 30px;
            background-color: antiquewhite;
            border-radius: 10px;
            text-align: center;
            position: absolute;
            cursor: pointer;
        }
        .select-list{
            margin: 12px;
        }