Question

<!DOCTYPE html>
<html>
<head>
<title>Controlled Assessment!</title>
<link rel="stylesheet" href="Css/stylesheet.css" type="text/css"/>
<!-- This is the webpage i found how to link an external script http://stackoverflow.com/questions/13739568/how-do-i-link-a-javascript-file-to-a-html-file -->
</head>

<body>

    <img id="color" src="Pictures/green.jpg" >

    <p id="hel">he</p>

    <button onclick="nxt()">new colour</button>

    <script type="text/jscript" src="JavaScript/trafficlight.js" />
</body>


<footer>

    <script src="JavaScript/trafficlight.js"></script>

</footer>


</html>

这是我的HTML代码

//My array that will be used for the traffic light sequence
var colour = ["Pictures/red.jpg", "Pictures/green.jpg", "Pictures/amber.jpg"];

function nxt() {

"use strict";
document.getElementById("hel").innerHTML = "helllll";

document.getElementById("color").innerHTML = colour["Pictures/red.jpg"];
}

这是我的Javascript我想要做的是当你点击按钮时图像变为另一个图像，在javascript部分的数组中列出，在这种情况下我试图从绿色变为红色但是它是不工作，我真的很困惑为什么??

Answer 1

要更改图像的src，请执行以下操作： document.getElementById（＆＃34; color＆＃34;）。src = color [0];

另外，你有颜色[＆＃34; Pictures / red.jpg＆＃34;]这没有多大意义。通过你想要的元素来查找它。

＆＃13;

//My array that will be used for the traffic light sequence
var colour = ["Pictures/red.jpg", "Pictures/green.jpg", "Pictures/amber.jpg"];

function nxt() {
document.getElementById("hel").innerHTML = "helllll";

document.getElementById("color").src = colour[0];
}

＆＃13;

    <img id="color" src="Pictures/green.jpg" >

    <p id="hel">he</p>

    <button onclick="nxt()">new colour</button>

＆＃13;

Javascript数组，图像链接，链接

1 个答案: