Added some significant speed-ups to height/width checks, thanks to some code and...

[jquery.git] / src / core.js

diff --git a/src/core.js b/src/core.js
index ebad0c1..508060a 100644 (file)
--- a/src/core.js
+++ b/src/core.js
@@ -346,14 +346,18 @@ jQuery.fn = jQuery.prototype = {
        },
 
        closest: function( selector ) {
-               var pos = jQuery.expr.match.POS.test( selector ) ? jQuery(selector) : null;
+               var pos = jQuery.expr.match.POS.test( selector ) ? jQuery(selector) : null,
+                       closer = 0;
 
                return this.map(function(){
                        var cur = this;
                        while ( cur && cur.ownerDocument ) {
-                               if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selector) )
+                               if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selector) ) {
+                                       jQuery.data(cur, "closest", closer);
                                        return cur;
+                               }
                                cur = cur.parentNode;
+                               closer++;
                        }
                });
        },
@@ -627,9 +631,7 @@ jQuery.extend({
 
        // Evalulates a script in a global context
        globalEval: function( data ) {
-               data = jQuery.trim( data );
-
-               if ( data ) {
+               if ( data && /\S/.test(data) ) {
                        // Inspired by code by Andrea Giammarchi
                        // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
                        var head = document.getElementsByTagName("head")[0] || document.documentElement,
@@ -732,26 +734,32 @@ jQuery.extend({
                        elem.style[ name ] = old[ name ];
        },
 
-       css: function( elem, name, force ) {
+       css: function( elem, name, force, extra ) {
                if ( name == "width" || name == "height" ) {
                        var val, props = { position: "absolute", visibility: "hidden", display:"block" }, which = name == "width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ];
 
                        function getWH() {
                                val = name == "width" ? elem.offsetWidth : elem.offsetHeight;
-                               var padding = 0, border = 0;
+
+                               if ( extra === "border" )
+                                       return;
+
                                jQuery.each( which, function() {
-                                       padding += parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
-                                       border += parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
+                                       if ( !extra )
+                                               val -= parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
+                                       if ( extra === "margin" )
+                                               val += parseFloat(jQuery.curCSS( elem, "margin" + this, true)) || 0;
+                                       else
+                                               val -= parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
                                });
-                               val -= Math.round(padding + border);
                        }
 
-                       if ( jQuery(elem).is(":visible") )
+                       if ( elem.offsetWidth !== 0 )
                                getWH();
                        else
                                jQuery.swap( elem, props, getWH );
 
-                       return Math.max(0, val);
+                       return Math.max(0, Math.round(val));
                }
 
                return jQuery.curCSS( elem, name, force );
@@ -857,7 +865,7 @@ jQuery.extend({
                                });
 
                                // Trim whitespace, otherwise indexOf won't work as expected
-                               var tags = jQuery.trim( elem ).toLowerCase();
+                               var tags = elem.replace(/^\s+/, "").substring(0, 10).toLowerCase();
 
                                var wrap =
                                        // option or optgroup
@@ -897,11 +905,12 @@ jQuery.extend({
                                if ( !jQuery.support.tbody ) {
 
                                        // String was a <table>, *may* have spurious <tbody>
-                                       var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
-                                               div.firstChild && div.firstChild.childNodes :
+                                       var hasBody = /<tbody/i.test(elem),
+                                               tbody = !tags.indexOf("<table") && !hasBody ?
+                                                       div.firstChild && div.firstChild.childNodes :
 
                                                // String was a bare <thead> or <tfoot>
-                                               wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
+                                               wrap[1] == "<table>" && !hasBody ?
                                                        div.childNodes :
                                                        [];