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Fixes #9239. If the body is already present in the DOM, use a div within it to perform boxModel-related support tests. Unit test added.

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jaubourg 2011-05-13 17:43:32 +02:00
parent b60c8560ce
commit ceba855c01
2 changed files with 45 additions and 10 deletions
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32
src/support.js
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@ -13,7 +13,9 @@ jQuery.support = (function() {
support,
fragment,
body,
bodyStyle,
testElementParent,
testElement,
testElementStyle,
tds,
events,
eventName,
@ -136,9 +138,11 @@ jQuery.support = (function() {
// Figure out if the W3C box model works as expected
div.style.width = div.style.paddingLeft = "1px";
// We use our own, invisible, body
body = document.createElement( "body" );
bodyStyle = {
body = document.getElementsByTagName( "body" )[ 0 ];
// We use our own, invisible, body unless the body is already present
// in which case we use a div (#9239)
testElement = document.createElement( body ? "div" : "body" );
testElementStyle = {
visibility: "hidden",
width: 0,
height: 0,
@ -147,11 +151,19 @@ jQuery.support = (function() {
// Set background to avoid IE crashes when removing (#9028)
background: "none"
};
for ( i in bodyStyle ) {
body.style[ i ] = bodyStyle[ i ];
if ( body ) {
jQuery.extend( testElementStyle, {
position: "absolute",
left: -1000,
top: -1000
});
}
body.appendChild( div );
documentElement.insertBefore( body, documentElement.firstChild );
for ( i in testElementStyle ) {
testElement.style[ i ] = testElementStyle[ i ];
}
testElement.appendChild( div );
testElementParent = body || documentElement;
testElementParent.insertBefore( testElement, testElementParent.firstChild );
// Check if a disconnected checkbox will retain its checked
// value of true after appended to the DOM (IE6/7)
@ -210,8 +222,8 @@ jQuery.support = (function() {
}
// Remove the body element we added
body.innerHTML = "";
documentElement.removeChild( body );
testElement.innerHTML = "";
testElementParent.removeChild( testElement );
// Technique from Juriy Zaytsev
// http://thinkweb2.com/projects/prototype/detecting-event-support-without-browser-sniffing/