Sizzle analysis record: Custom pseudo-class selector

Visibility

• : Hidden
• : Visible

The hidden object has no width or height, provided thatDisplay: None processed

jQuery.expr.filters.hidden = function( elem ) {    // Support: Opera <= 12.12    // Opera reports offsetWidths and offsetHeights less than zero on some elements    return elem.offsetWidth <= 0 && elem.offsetHeight <= 0;};jQuery.expr.filters.visible = function( elem ) {    return !jQuery.expr.filters.hidden( elem );};

 

Content

• : Contains (text)
• : Empty
• : Has (selector)
• : Parent

Get text content matching through indexof

"contains": markFunction(function( text ) {    return function( elem ) {        return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;    };}),

 

Null

Recursion of this node to exclude nodes with nodetype greater than 6

// Contents"empty": function( elem ) {    // http://www.w3.org/TR/selectors/#empty-pseudo    // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),    //   but not by others (comment: 8; processing instruction: 7; etc.)    // nodeType < 6 works because attributes (2) do not appear as children    for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {        if ( elem.nodeType < 6 ) {            return false;        }    }    return true;},

 

View include

Recursive sizzle implements include search by passing context objects

"has": markFunction(function( selector ) {    return function( elem ) {        return Sizzle( selector, elem ).length > 0;    };}),

 

Match an element containing child elements or text

"parent": function( elem ) {    return !Expr.pseudos["empty"]( elem );},