jQuery Blur Fires Before href

问题:

I am trying to use an Ajax search\suggest box. I use jQuery to handle the textbox losing focus. However, when I click on a link in the suggestion list jQuery fires the blur event and the link is not followed. Here is the jQuery code:

$(document).ready(function() {

    $('#lstxt').click(function() {
        this.value = '';
    });
    $('#lstxt').blur(function() {
        this.value = 'Database Search';
        document.getElementById('ls').innerHTML='';
        document.getElementById('ls').style.border='0px';
    });
});

How do I get it to not fire .blur if a link is being clicked inside the suggestion list (id="ls_table")?

回答1:

var global_switch = false;
$('#ls_table').hover (
  function () { global_switch = true; },
  function () { global_switch = false; }
)
$('#lstxt').blur(function() {
  if (global_switch) { return; } else { ...});

This is just a proof of concept. As always, global variables are bad. Take a look at jQuery's data API to circumvent it.

Cheers,

回答2:

The method I used when implementing my own is adding a slight delay:

$('#lstxt').blur(function(){
    setTimeout(function(){
        // original blur code here
    }, 250);
});

Definitely not the best solution (but usually works). But Boldewyn's solution should work -- assuming that #ls_table has been created before trying to assign it. If you're creating/destroying #ls_table frequently, you can bind the event to the parent element:

// just using the data API for jquery.
$('#ls').hover(
    function(){ $('#ls').data('autocompleteover', 1); },
    function(){ $('#ls').data('autocompleteover', 0); }
);
$('#lstxt').blur(function(){
    if($('#ls').data('autocompleteover'))
        return;
    // original blur code here
}

回答3:

try this code:

$(document).ready(function() {

    $('#lstxt').click(function() {
        this.value = '';
        return true;
    });
    $('#lstxt').blur(function() {
        this.value = 'Database Search';
        $('#ls').html('').css('border',"0px");
        return true;
    });
});

edit: blur will fire if you click outside of a textbox. is lstxt a textbox?

edit2: you will need to unbind the blur event and rebind it conditionally. i would need more info about your page layout to tell you how to do it

回答4:

I manage similar problem (with some custom validator on blur, which was fired before click on close button - but I want to close dialog (click) without this blur event fired) code on input (with validator):

      ..
      $(this).blur({validators: validators}, function(event){ // blur                                                
      (function($this){
         validator_timeout = setTimeout(function(){ // validator_timeout is global
           $this.validate(event.data.validators); // do some validation
         }, 50); // delay just minimum of time, but enough to let other event to be fired
       }($(this))); // passing $(this) to function
      });...

and on other event handler, like close dialog, when we don't want to call function on validate, just clear validator_timeout to suppress blur:

   click_function = function(){                        
       clearTimeout(validator_timeout);
       $( this ).dialog( "close" );
   }   

Hope it will be useful for someone.