include/javascript/jquery/jquery.highLight.js

   1     jQuery.fn.highlight = function(pat) {
   2         function innerHighlight(node, pat) {
   3             var skip = 0;
   4             if (node.nodeType == 3) {
   5                 var pos = node.data.toUpperCase().indexOf(pat);
   6                 if (pos >= 0) {
   7                     var spannode = document.createElement('span');
   8                     spannode.className = 'highlight';
   9                     var middlebit = node.splitText(pos);
  10                     var endbit = middlebit.splitText(pat.length);
  11                     var middleclone = middlebit.cloneNode(true);
  12                     spannode.appendChild(middleclone);
  13                     middlebit.parentNode.replaceChild(spannode, middlebit);
  14                     skip = 1;
  15                 }
  16             }
  17             else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
  18                 for (var i = 0; i < node.childNodes.length; ++i) {
  19                     i += innerHighlight(node.childNodes[i], pat);
  20                 }
  21             }
  22             return skip;
  23         }
  24
  25         return this.each(function() {
  26             innerHighlight(this, pat.toUpperCase());
  27         });
  28     };
  29
  30     jQuery.fn.removeHighlight = function() {
  31         return this.find("span.highlight").each(
  32                 function() {
  33                     this.parentNode.firstChild.nodeName;
  34                     with (this.parentNode) {
  35                         replaceChild(this.firstChild, this);
  36                         normalize();
  37                     }
  38                 }).end();
  39     };