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No ticket: reduce support.js

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Richard Gibson
2013-02-25 16:06:09 -05:00
parent 44340c889b
commit 328ba956c0
1 changed files with 49 additions and 52 deletions
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101
src/support.js
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@@ -1,19 +1,17 @@
jQuery.support = (function() {
jQuery.support = (function( support ) {
var support, all, a,
input, select, fragment,
opt, eventName, isSupported, i,
var all, a, input, select, fragment, opt, eventName, isSupported, i,
div = document.createElement("div");
// Setup
div.setAttribute( "className", "t" );
div.innerHTML = " <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
// Support tests won't run in some limited or non-browser environments
// Finish early in limited (non-browser) environments
all = div.getElementsByTagName("*");
a = div.getElementsByTagName("a")[ 0 ];
if ( !all || !a || !all.length ) {
return {};
return support;
}
// First batch of tests
@@ -22,64 +20,63 @@ jQuery.support = (function() {
input = div.getElementsByTagName("input")[ 0 ];
a.style.cssText = "top:1px;float:left;opacity:.5";
support = {
// Test setAttribute on camelCase class. If it works, we need attrFixes when doing get/setAttribute (ie6/7)
getSetAttribute: div.className !== "t",
// IE strips leading whitespace when .innerHTML is used
leadingWhitespace: div.firstChild.nodeType === 3,
// Test setAttribute on camelCase class. If it works, we need attrFixes when doing get/setAttribute (ie6/7)
support.getSetAttribute = div.className !== "t";
// Make sure that tbody elements aren't automatically inserted
// IE will insert them into empty tables
tbody: !div.getElementsByTagName("tbody").length,
// IE strips leading whitespace when .innerHTML is used
support.leadingWhitespace = div.firstChild.nodeType === 3;
// Make sure that link elements get serialized correctly by innerHTML
// This requires a wrapper element in IE
htmlSerialize: !!div.getElementsByTagName("link").length,
// Make sure that tbody elements aren't automatically inserted
// IE will insert them into empty tables
support.tbody = !div.getElementsByTagName("tbody").length;
// Get the style information from getAttribute
// (IE uses .cssText instead)
style: /top/.test( a.getAttribute("style") ),
// Make sure that link elements get serialized correctly by innerHTML
// This requires a wrapper element in IE
support.htmlSerialize = !!div.getElementsByTagName("link").length;
// Make sure that URLs aren't manipulated
// (IE normalizes it by default)
hrefNormalized: a.getAttribute("href") === "/a",
// Get the style information from getAttribute
// (IE uses .cssText instead)
support.style = /top/.test( a.getAttribute("style") );
// Make sure that element opacity exists
// (IE uses filter instead)
// Use a regex to work around a WebKit issue. See #5145
opacity: /^0.5/.test( a.style.opacity ),
// Make sure that URLs aren't manipulated
// (IE normalizes it by default)
support.hrefNormalized = a.getAttribute("href") === "/a";
// Verify style float existence
// (IE uses styleFloat instead of cssFloat)
cssFloat: !!a.style.cssFloat,
// Make sure that element opacity exists
// (IE uses filter instead)
// Use a regex to work around a WebKit issue. See #5145
support.opacity = /^0.5/.test( a.style.opacity );
// Check the default checkbox/radio value ("" on WebKit; "on" elsewhere)
checkOn: !!input.value,
// Verify style float existence
// (IE uses styleFloat instead of cssFloat)
support.cssFloat = !!a.style.cssFloat;
// Make sure that a selected-by-default option has a working selected property.
// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
optSelected: opt.selected,
// Check the default checkbox/radio value ("" on WebKit; "on" elsewhere)
support.checkOn = !!input.value;
// Tests for enctype support on a form (#6743)
enctype: !!document.createElement("form").enctype,
// Make sure that a selected-by-default option has a working selected property.
// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
support.optSelected = opt.selected;
// Makes sure cloning an html5 element does not cause problems
// Where outerHTML is undefined, this still works
html5Clone: document.createElement("nav").cloneNode( true ).outerHTML !== "<:nav></:nav>",
// Tests for enctype support on a form (#6743)
support.enctype = !!document.createElement("form").enctype;
// jQuery.support.boxModel DEPRECATED in 1.8 since we don't support Quirks Mode
boxModel: document.compatMode === "CSS1Compat",
// Makes sure cloning an html5 element does not cause problems
// Where outerHTML is undefined, this still works
support.html5Clone = document.createElement("nav").cloneNode( true ).outerHTML !== "<:nav></:nav>";
// Will be defined later
deleteExpando: true,
noCloneEvent: true,
inlineBlockNeedsLayout: false,
shrinkWrapBlocks: false,
reliableMarginRight: true,
boxSizingReliable: true,
pixelPosition: false
};
// jQuery.support.boxModel DEPRECATED in 1.8 since we don't support Quirks Mode
support.boxModel = document.compatMode === "CSS1Compat";
// Will be defined later
support.inlineBlockNeedsLayout = false;
support.shrinkWrapBlocks = false;
support.pixelPosition = false;
support.deleteExpando = true;
support.noCloneEvent = true;
support.reliableMarginRight = true;
support.boxSizingReliable = true;
// Make sure checked status is properly cloned
input.checked = true;
@@ -237,5 +234,5 @@ jQuery.support = (function() {
all = select = fragment = opt = a = input = null;
return support;
})();
})({});