小刘同学的第二十七篇博文

2018-06-24 01:21:16来源：未知阅读 ()

。。。求期末不挂。。。

今天完成了第四题，逻辑稍微有点纠缠，但还好问题不是很多

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>homework4</title>
</head>
<body>
<!-- 
/**
 * 
 * @author: xiaoliu
 * @type: NO.16-homework4
 * @data: 2018-01-19
 * @finished: 2018-01-1
 *
 */
 -->
<ul id="myList">
</ul>
<script>
    var myL = document.getElementById("myList");
    var count = 0;
    function removeNode() {
        var ipt = document.getElementById("remove");

        ipt.parentNode.parentNode.remove();
        for (var i = 0; i < myL.getElementsByTagName("li").length; i++) {
            myL.children[i].children[0].innerHTML = i + 1;
        }
        count = myL.getElementsByTagName("li").length;
    }
    function appendItem() {
        var hobby = prompt("请输入你的兴趣爱好", "如唱歌，跳舞等");
        var next = document.createElement("li");
        var span1 = document.createElement("span");
        var span2 = document.createElement("span");
        var span3 = document.createElement("span");
        span1.innerHTML = ++count;
        span2.innerHTML = hobby;
        span3.innerHTML = '<input id="remove" type="button" value="删除按钮" onclick="removeNode()"/>';
        next.appendChild(span1);
        next.appendChild(span2);
        next.appendChild(span3);
        myL.appendChild(next);
    }
</script>
<input type="button" value="按钮" onclick="appendItem()">
</body>
</html>