除了使用<a href="#">元素</a>之外，还有更好的方法可以点击其他内容

Question

I usually just use # to attach events to click-able elements without a url, but I was thinking about it and feel like it is a little hacky. Is there a better way to do this?

<a href="#"><img src="images/click_here.gif"/></a> 

$('a').click(function(event){
    alert('you clicked on the click button')
});

Answer 1

My favorite trick is to just attach the click handler to any old element, then use CSS to set cursor: pointer on it so it looks clickable. Bonus points if you add :hover and :active states to really tip the user off.

Example HTML:

<img src="images/click_here.gif" id="click-here-button" />

JS:

$("#click-here-button").click(function () {
    alert("You clicked on the click button.");
});

CSS:

#click-here-button
{
    cursor: pointer;
}

Answer 2

If you're using jQuery I think anything can be clickable:

$('elementToClick').click(
    function(){
        alert('you clicked on a clickable thing');
    });

You could use the hover() method to simulate a hyperlink-look:

$('elementToClick').hover(
    function(){
       $(this).addClass('clickable'); /* or
       $(this).css('cursor','pointer'); */
    },
    function(){
       $(this).removeClass('clickable'); /* or
       $(this).css('cursor','auto'); */
    });

   $('elementToClick).click(
       function(){
           alert('you clicked the clickable thing');
           if (this.tagName == 'A') {
              return false;
           }
           });

Using CSS:

.clickable {
    cursor: pointer;
}

JS Fiddle demo

Answer 3

Depends on the context. If the click action is supposed to link somewhere (even if you intercept that action), then that's what <a /> means. Be happy with it. If you're triggering some other "non-navigation" functionality, I'd just put a click-handler on the <img> and set an appropriate cursor in CSS. Personal choice, to be honest.

Answer 4

Use javascript:void(0); instead of "#"

<a href="javascript:void(0);"><img src="images/click_here.gif"/></a> 

This way you won't add the extra "#" in the URL.

Answer 5

How about this:

<input type="image" src="http://www.google.com/images/logos/ps_logo2.png">

Then just add an event handler and you're golden. :)