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Core: Support Trusted Types #479

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Core: Support Trusted Types #479

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30 changes: 23 additions & 7 deletions src/sizzle.js
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Original file line number Diff line number Diff line change
Expand Up @@ -199,7 +199,23 @@ var i,
return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset";
},
{ dir: "parentNode", next: "legend" }
);
),

// Trusted Types support
trustedTypesPolicy,
createHTML = function( html ) {
if ( trustedTypesPolicy === undefined ) {
trustedTypesPolicy = {
createHTML: function( html ) {
return html;
}
};
if ( typeof window.trustedTypes !== "undefined" && window.trustedTypes.createPolicy ) {
trustedTypesPolicy = window.trustedTypes.createPolicy( "jquery/sizzle" );
}
}
return trustedTypesPolicy.createHTML( html );
};

// Optimize for push.apply( _, NodeList )
try {
Expand Down Expand Up @@ -806,9 +822,9 @@ setDocument = Sizzle.setDocument = function( node ) {
// setting a boolean content attribute,
// since its presence should be enough
// https://bugs.jquery.com/ticket/12359
docElem.appendChild( el ).innerHTML = "<a id='" + expando + "'></a>" +
docElem.appendChild( el ).innerHTML = createHTML( "<a id='" + expando + "'></a>" +
"<select id='" + expando + "-\r\\' msallowcapture=''>" +
"<option selected=''></option></select>";
"<option selected=''></option></select>" );

// Support: IE8, Opera 11-12.16
// Nothing should be selected when empty strings follow ^= or $= or *=
Expand Down Expand Up @@ -863,8 +879,8 @@ setDocument = Sizzle.setDocument = function( node ) {
} );

assert( function( el ) {
el.innerHTML = "<a href='' disabled='disabled'></a>" +
"<select disabled='disabled'><option/></select>";
el.innerHTML = createHTML( "<a href='' disabled='disabled'></a>" +
"<select disabled='disabled'><option/></select>" );

// Support: Windows 8 Native Apps
// The type and name attributes are restricted during .innerHTML assignment
Expand Down Expand Up @@ -2410,7 +2426,7 @@ support.sortDetached = assert( function( el ) {
// Prevent attribute/property "interpolation"
// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !assert( function( el ) {
el.innerHTML = "<a href='#'></a>";
el.innerHTML = createHTML( "<a href='#'></a>" );
return el.firstChild.getAttribute( "href" ) === "#";
} ) ) {
addHandle( "type|href|height|width", function( elem, name, isXML ) {
Expand All @@ -2423,7 +2439,7 @@ if ( !assert( function( el ) {
// Support: IE<9
// Use defaultValue in place of getAttribute("value")
if ( !support.attributes || !assert( function( el ) {
el.innerHTML = "<input/>";
el.innerHTML = createHTML( "<input/>" );
el.firstChild.setAttribute( "value", "" );
return el.firstChild.getAttribute( "value" ) === "";
} ) ) {
Expand Down