Created
January 22, 2012 09:00
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My Get By ID
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>BFS</title> | |
| </head> | |
| <body> | |
| <div> | |
| <em> | |
| <em> | |
| <h1>This is a title</h1> | |
| <p>Some text there</p> | |
| </em> | |
| </em> | |
| </div> | |
| <div> | |
| <div> | |
| <ul> | |
| <li><a href="#">Item 1<span></span></a></li> | |
| <li><a href="#">Item 2<span></span></a></li> | |
| <li><p><a href="#">Item 3<span></span></a></p></li> | |
| <li> | |
| <p><a id="my-unique-id" href="#">Item 4<span></span></a></p> | |
| </li> | |
| </ul> | |
| </div> | |
| </div> | |
| <script> | |
| /** | |
| * Get an element from the dom by ID using BFS | |
| * @param {String} id The ID you are searching for | |
| * @param {Array} group This is for internal use only | |
| * @return {Object} | |
| */ | |
| function getById(id, group) { | |
| var _group = []; | |
| group = group || [[document]]; | |
| for (var j = 0, l = group.length; j < l; j++) { | |
| var nodes = group[j]; | |
| for (var i = 0, ln = nodes.length; i < ln; i++) { | |
| var child = nodes[i]; | |
| if (child.nodeType !== 1 && child.nodeType !== 9 && child.nodeType !== 9) { | |
| continue; | |
| } else { | |
| if (child.id === id) { | |
| return child; | |
| } | |
| if (child.childNodes) { | |
| console.log('Node name ===> ', child.nodeName); | |
| _group.push(child.childNodes); | |
| } | |
| } | |
| } | |
| } | |
| return (_group.length) ? getById(id, _group) : null; | |
| } | |
| console.log('RESULT TAG IS: ', getById('my-unique-id').nodeName); | |
| </script> | |
| </body> | |
| </html> |
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