Question

我正在处理待办事项列表，我正在尝试创建一个删除按钮，该按钮将提示ID号删除记录。您选择要删除的记录。不确定如何去做。此代码中也包含html。

<!DOCTYPE html>
<html>
<head>
    <title>To Do List</title>
    <style>
        body{margin:20px;}
    </style>
    <script type="text/javascript">
    var list;
    var addBtn;
    document.addEventListener("DOMContentLoaded",load);
    function load(){
        list = get("list");
        checkboxes = getTag("input");
        addBtn = get("addBtn");
        addBtn.addEventListener("click",addItem);
        for(var i = 0, l = checkboxes.length; i < l ; i++){
            if(checkboxes[i].type == "checkbox")
                checkboxes[i].addEventListener("click",updatePercent);
        }
        if(localStorage.listFile)
            //list.innerHTML = localStorage.listFile;
        updatePercent();
    }
    function updatePercent(){
        var checkboxes = getTag("input");
        var total = checkboxes.length/2;
        var done = 0;
        for(var i = 0, l = checkboxes.length; i < l ; i++){
            if(checkboxes[i].checked)
                done++;
        }
        get("percentage").innerHTML = "Done: " + Math.round((done/total)*100) + "%";
    }
    function addItem(){
        var item = document.createElement('li');
        var chk = document.createElement("input");
        var txt = document.createElement("input");
        chk.type = "checkbox";
        txt.type = "text";
        chk.addEventListener("click",updatePercent);
        item.appendChild(chk);
        item.appendChild(txt);
        list.appendChild(item);
        updatePercent();
    }
    function get(id){
        return document.getElementById(id);
    }
    function getTag(tag){
        return document.getElementsByTagName(tag);
    }
    function save(){
        localStorage.listFile = list.innerHTML;
    }
    function deleteTsk(){
        var i = prompt("Enter number you want to delete") - 1;
        //checkboxes[i].splice(i,1);
        checkboxes[i].innerHTML = "";
    }
    </script>
</head>
<body>
    <h1>Kung Fu To Do List 1.0</h1>
    <ol id="list">
        <li><input type="checkbox"><input type="text"></li>
    </ol>
    <p id="percentage"></p>
    <button id="addBtn">Add Item</button><button onclick="save()">Save</button><button onclick="deleteTsk()">Delete</button>
</body>

我想出了如何用这种方法删除它。

function deleteTsk(){
        var i = prompt("Enter number you want to delete") - 1;
        var item = getTag("li");
        list.removeChild(item[i]);
    }

Answer 1

我想出了如何用这种方法删除它。

function deleteTsk(){
        var i = prompt("Enter number you want to delete") - 1;
        var item = getTag("li");
        list.removeChild(item[i]);
    }

如何在我的JavaScript待办事项列表中删除记录？

1 个答案: