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jQuery("does not exist ").data() throws exception
[3Replies]
- 14-Apr-2010 03:49 AM
- Forum: Developing jQuery Core
the following code from jQuery(1.4.2).fn.extend( { data : function {.........} } ):
2. if ( typeof key === "undefined" && this.length ) {
3. .....
4. } else if ( typeof key === "object" ) {
5. ......
6. }
does not handle the situation when: key is undefined,and this.length===0,
next line of code:
1. var parts = key.split(".");
cause the exception because key is undefined.
I think jQuery("does not exist ").data() should return undefined , instead of throwing an exception.

about jQuery.parseJSON
[3Replies]
- 10-Apr-2010 10:23 AM
- Forum: Developing jQuery Core
when I see the codes below:
2. return window.JSON && window.JSON.parse ?
3. window.JSON.parse( data ) :
4. (new Function("return " + data))();
I think the the
1. (new Function("return " + data))();
is slower than use eval directly, it may be improved this way:
1. ( eval( "["+data+"]" ) ) [0]

about jQuery.makeArray
[1Reply]
- 10-Apr-2010 08:53 AM
- Forum: Developing jQuery Core
1. makeArray: function( array, results ) {
  var ret = results || [];
  
  if ( array != null ) {
  // The window, strings (and functions) also have 'length'
  // The extra typeof function check is to prevent crashes
  // in Safari 2 (See: #3039)
  if ( array.length == null || typeof array === "string" ||
  jQuery.isFunction(array) || (typeof array !== "function" && array.setInterval) ) {
  push.call( ret, array );
  } else {
  jQuery.merge( ret, array );
  }
  }
  
  return ret;
  },
when the argument arr is actually an array, it can be faster :
1. // results is for internal usage only
  makeArray: function( array, results ) {
  var ret = results || [];
  
  if ( array != null ) {
  if ( jQuery.isArray(array) )
  {
  return slice.call(array,0);
  }
  // The window, strings (and functions) also have 'length'
  // The extra typeof function check is to prevent crashes
  // in Safari 2 (See: #3039)
  if ( array.length == null || typeof array === "string" ||
  jQuery.isFunction(array) || (typeof array !== "function" && array.setInterval) ) {
  push.call( ret, array );
  } else {
  jQuery.merge( ret, array );
  }
  }
  
  return ret;
  },

[jQuery] jquery not work when firebug in on
[0Replies]
- 01-Aug-2009 03:43 PM
- Forum: Using jQuery
windows xp
firefox 3.0.6
jquery:1.3.2(latest release)
script:
        $(document).ready(
                function()
                {
                    $("a").click(
                        function(event)
                        {
                            alert("Click");
                        }
                        );
                }
                );
when i turn the firebuf off,it works well.
Please help.
thanks.

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