“Disable” a link temporarily when clicked?

问题:

I have a link that when clicked, performs some animation functions to some divs etc and works very well. My problem is when I click the button more than once etc, the animation looks weird. I would like it so, that when my button is clicked, the button is "disabled" for say 2 seconds.

I don't think I need to post the code, but just ask if you think you need it.

My link is like so:

<a href="button">Click</a>

回答1:

Yes, you can absolutely do this.

You add a click handler and use preventDefault() when the animation is running until it is complete. More about preventDefault is in the jQuery docs. You can use a flag or change your click handler after the first click to accomplish this. Here's an example with a flag.

var isAnimating = false;
$("#animationLink").click(function(e) {
    if(!isAnimating) {
        isAnimating = true;
        setTimeout("isAnimating = false", 2000); // set to false in 2 seconds
        // alternatively you could wait until your animation is done
        // call animation code
    } else {
        e.preventDefault();
    }
});

return false; from your click handler will have the same effect as preventDefault with the added action of preventing event bubbling up the DOM.

回答2:

Here's a self-contained way to do it using one, which automatically unbinds the click handler after a single trigger, and a click function that rebinds itself:

$('#yourlink').one('click', function clicker(){ // name the function
    var that = this;
    event.preventDefault();
    do_your_stuff_here();
    var rebind = setTimeout(function() {
       $(that).one('click',clicker); // ...then rebind by name
    }, 2000);   
});

Here's a working example: http://jsfiddle.net/redler/8sGqK/

回答3:

If you don't want the link to work when you click it, you need to return false.

$('a').click(function(){
   if (doSomeCheck()) {
     //run animation
   } else {
      return false; //don't want the link to work
   }
});

However, I recommend you look at the effects API and the .stop() method to fix your animation getting wonky : http://api.jquery.com/category/effects/

回答4:

Without using global variables or timeOuts you could leverage the callback for your animation to reassign the function.

function DoTheAnimation(){
    var $a = $(this);
    var h = $("div").height() + 100;
    $("div").animate({'height': h}, "slow",function(){
     $a.one("click.animate", DoTheAnimation);
   });
}

$("a").click(function(event){event.preventDefault();}).one("click.animate", DoTheAnimation);

Code example on jsfiddle.