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This method returns element's first descendant or the n-th descendant if index is specified that matches cssRule.
If no cssRule is provided, all descendants are considered. If no descendant matches these criteria, undefined is returned.
element.down([cssRule][, index = 0]); |
NOTE: element.down() and element.down(0) are equivalent.
<html> <head> <title>Prototype examples</title> <script type="text/javascript" src="/javascript/prototype.js"> </script> <script> function showResult(){ alert( "1 : " + $('fruits').down(3).innerHTML ); alert( "2 : " + $('apples').down('li').innerHTML ); alert( "3 : " + $('apples').down('li.yummy').innerHTML ); alert( "4 : " + $('fruits').down('.yummy', 1).innerHTML ); alert( "5 : " + $('fruits').down(99) ); } </script> </head> <body> <p>Click the button to see the result.</p> <ul id="fruits"> <li id="apples"> <ul> <li id="golden-delicious">Golden Delicious</li> <li id="mutsu" class="yummy">Mutsu</li> <li id="mcintosh" class="yummy">McIntosh</li> <li id="ida-red">Ida Red</li> </ul> </li> </ul> <br /> <input type="button" value="showResult" onclick="showResult();"/> </body> </html> |
To understand it in better way you can Try it yourself.
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