我今天的HTML / JS文件出现了这个问题,我试图让脚本正常运行。
HTML:
<head>
<h1>Pushing into an array</h1>
</head>
<body>
<p>Enter your input to the form before adding</p>
<p>Click to add to array</p>
<p id="demo"></p>
<br>
<button onclick="myFunction()">Display Variable</button>
<form name="myform">
<input type="text" name="text1" value="">
<input type="button" value="Enter Value" onclick="setValue()">
</form>
<p id="value"></p>
</body>
JavaScript的:
var colours = ["Red", "Orange", "Yellow", "Green"];
document.getElementById("myFunction").innerHTML = colours;
function display() {
colours.push("Blue");
document.getElementById("demo").innerHTML = colours;
}
function setValue(){
var myVariable = document.forms["myform"]["text1"].value;
document.getElementById("value").innerHTML = myVariable;
}
这样做的目的是从表单/警报中获取用户输入并将其传输到阵列(显示在屏幕上)但我似乎无法使其正常工作!有什么想法吗?
答案 0 :(得分:0)
myFunction()的onclick可能应该是display(),而document.getElementById(&#34; myFunction&#34;)目前还没有引用页面中任何元素的id,如果这是& #39;演示&#39; (不确定您是否尝试将数组设置为页面中的某个元素)?
答案 1 :(得分:0)
我不确切地知道你想做什么,但是根据我的直觉,我修改了代码来做我认为你问的事。
<body>
<p>Enter your input to the form before adding</p>
<p>Click to add to array</p>
<p id="demo"></p>
<br>
<div id="myFunction"></div>
<button onclick="display()">Display Variable</button>
<form name="myform">
<input type="text" name="text1" value="">
<input type="button" value="Enter Value" onclick="setValue()">
</form>
<p id="value"></p>
var colours = ["Red", "Orange", "Yellow", "Green"];
function display() {
document.getElementById("demo").innerHTML = colours;
}
function setValue(){
var myVariable = document.forms["myform"]["text1"].value;
document.getElementById("value").innerHTML = myVariable;
colours.push(myVariable);
}
添加值,点击输入值,然后点击显示变量。你已经列出了它。
答案 2 :(得分:0)
我设法通过帮助排序代码。谢谢,修复:
<!DOCTYPE html>
<html>
<head>
<script>
var colours = ["Red", "Orange", "Yellow", "Green"];
function display() {
document.getElementById("demo").innerHTML = colours;
}
function setValue(){
var myVariable = document.myform.text1.value;
document.getElementById("demo2").innerHTML = myVariable;
colours.push(myVariable);
}
</script>
</head>
<body>
<p>Enter your input to the form before adding</p>
<p>Click to add to array</p>
<p id="demo"></p>
<br>
<div id="myFunction"></div>
<button onclick="display()">Display Variable</button>
<form name="myform">
<input type="text" name="text1" value="">
<input type="button" value="Enter Value" onclick="setValue()">
</form>
<p id="demo2"></p>
</body>
</html>