使用 JavaScript 更改图像源 [英] Change image source with JavaScript

问题描述

所以我是 JavaScript 新手(这实际上是我第一次尝试做一些事情)并且我遇到了一些麻烦.我以为我有足够的知识来完成这项工作，我什至在谷歌上搜索了可以帮助我解决这个问题的教程和脚本，但没有任何帮助.

我似乎无法更改图像源，这是我目前拥有的代码:

 function changeImage(a) {document.getElementById("img").src=a.src;}

 
<img id="img";src=1772031_29_b.jpg">
<div id="thumb_img"><img src='1772031_29_t.jpg' onclick='changeImage("1772031_29_b.jpg");'><img src='1772031_55_t.jpg' onclick='changeImage("1772031_55_b.jpg");'><img src='1772031_53_t.jpg' onclick='changeImage("1772031_53_b.jpg");'>

如果我做错了什么，有人可以解释一下吗?或者也许我错过了什么?请帮助我:-)

解决方案

function changeImage(a) 所以没有 a.src => 之类的东西就用a.

演示 这里

So I'm new with JavaScript (this is actually my first attempt to make something work) and I'm having a bit of trouble. I thought I had enough knowledge to make this work, I've even googled for tutorials and scripts that could help me work this out but nothing really helped.

I can't seem to change the image source, heres the code that I have so far:

    function changeImage(a) {
        document.getElementById("img").src=a.src;
    }

    <div id="main_img">
        <img id="img" src="1772031_29_b.jpg">
    </div>
    <div id="thumb_img">
        <img src='1772031_29_t.jpg'  onclick='changeImage("1772031_29_b.jpg");'>
        <img src='1772031_55_t.jpg'  onclick='changeImage("1772031_55_b.jpg");'>
        <img src='1772031_53_t.jpg'  onclick='changeImage("1772031_53_b.jpg");'>
    </div>

Could anyone please explain if I'm doing something wrong? Or maybe I'm missing something? Help me please :-)

解决方案

function changeImage(a) so there is no such thing as a.src => just use a.

demo here

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