用JavaScript显示/隐藏图像 [英] Show/hide image with JavaScript
问题描述
我有一个HTML页面,其中有一个图像,我设置为CSS visibility:hidden
不可见。我想制作一个名为显示图像的链接,这样当我点击它时,图像就会出现。
现在,我不知道如何创建这样的链接,因为通常链接为< a href = ...>
链接到其他页面。在我的情况下,我希望链接调用JavaScript来显示图像。 解决方案
showImage
定义为显示图片,您可以链接为:
< a href =javascript:showImage()>显示图片< / a>
如果您需要定义该函数的帮助,我会尝试:
function showImage(){
var img = document.getElementById('myImageId');
img.style.visibility ='visible';
}
或者,更好的是,
函数setImageVisible(id,visible){
var img = document.getElementById(id);
img.style.visibility =(可见?'可见':'隐藏');
}
然后,您的链接将为:
< a href =javascript:setImageVisible('myImageId',true)> show image< / a>
< a href =javascript:setImageVisible('myImageId',false)>隐藏图片< / a>
I have an HTML page with an image that I set to be invisible by CSS visibility: hidden
. I want to make a link called "Show image", so that when I click on it, the image appears.
Now, I don't know how to make such a link, since normally a link with <a href=...>
links to some other page. In my case, I want the link to invoke a JavaScript to display the image.
If you already have a JavaScript function called showImage
defined to show the image, you can link as such:
<a href="javascript:showImage()">show image</a>
If you need help defining the function, I would try:
function showImage() {
var img = document.getElementById('myImageId');
img.style.visibility = 'visible';
}
Or, better yet,
function setImageVisible(id, visible) {
var img = document.getElementById(id);
img.style.visibility = (visible ? 'visible' : 'hidden');
}
Then, your links would be:
<a href="javascript:setImageVisible('myImageId', true)">show image</a>
<a href="javascript:setImageVisible('myImageId', false)">hide image</a>
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