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我正在做一個簡單的應用程序在香草JavaScript中，我試圖重置輸入字段後，每次點擊，但由於某種原因，它不會重新設置後，每次點擊。輸入字段不重置
它會在您點擊輸入字段後重置，但我想要的是輸入字段在點擊「添加」按鈕後重置，而不必點擊輸入字段。
輸入字段是不是裏面<form>
這是我的功能，嘗試重置輸入字段
document.getElementById("task").onclick = function() {
Reset();
}
function Reset() {
document.getElementById("task").value = null;
}<div class="row">
<div class="col s12">
<div class="input-field inline">
<input id="task" type="text">
<label for="email" data-error="wrong" data-success="right">Add a todo</label>
</div>
<a id="add" class="btn-floating btn-large waves-effect waves-light red"><i class="material-icons">add</i></a>
</div>
</div>現在這是問題因某種原因及其影響本地存儲：
function getTodos(){
var todos = new Array();
var todos_str = localStorage.getItem('todo');
if(todos_str !== null) {
todos = JSON.parse(todos_str);
}
return todos;
}
// Please do not use inline event handlers, use this instead:
document.getElementById("add").onclick = function() {
Reset();
}
function Reset() {
document.getElementById("task").value = null;
}
function add(){
var task = document.getElementById('task').value;
var todos = getTodos();
todos.push(task);
localStorage.setItem('todo', JSON.stringify(todos));
show();
return false;
}
function remove() {
var id = this.getAttribute('id');
var todos = getTodos();
todos.splice(id, 1);
localStorage.setItem('todo', JSON.stringify(todos));
show();
return false;
}
function show() {
var todos = getTodos();
var html = '<ul>';
for(var i = 0; i < todos.length; i++) {
html += '<li>' + todos[i] + '<button class="remove" id="' + i + '"> x </button></li>';
};
html += '</ul>';
document.getElementById('todos').innerHTML = html;
var buttons = document.getElementsByClassName('remove');
for(var i = 0; i < buttons.length; i++){
buttons[i].addEventListener('click', remove);
};
}
document.getElementById('add').addEventListener('click', add);
show();<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>to do app</title>
<!--Import Google Icon Font-->
<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
<!--Import materialize.css-->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.100.2/css/materialize.min.css">
<!--Let browser know website is optimized for mobile-->
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
</head>
<body>
<div class="navbar-fixed">
<nav>
<div class="nav-wrapper">
<a href="#" class="brand-logo">Logo</a>
<ul id="nav-mobile" class="right hide-on-med-and-down">
<li><a href="sass.html">Sass</a></li>
<li><a href="badges.html">Components</a></li>
<li><a href="collapsible.html">JavaScript</a></li>
</ul>
</div>
</nav>
</div>
<div class="row">
<div class="col s12">
<div class="input-field inline">
<input class="reset-task" id="task" type="text">
<label for="email" data-error="wrong" data-success="right">Add a todo</label>
</div>
<a id="add" class="btn-floating btn-large waves-effect waves-light red"><i class="material-icons">add</i></a>
</div>
</div>
<div id="todos"></div>
<script src="app.js"></script>
<!--Import jQuery before materialize.js-->
<script type="text/javascript" src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.100.2/js/materialize.min.js"></script>
</body>
</html>
你確定你的JavaScript中的HTML調用後已經被解析。？ – laruiss
我把它作爲一個片段，它實際上工作，你能提供一個非工作的例子嗎？ –
這變成了一個無效的標記。因爲它有重複的ID。 – Jai