JQuery+JS实现仿百度搜索结果中关键字变色效果

<script type="text/javascript">
$(function() {
$("#btn_1").click(function() {
var $keyword = $("#Text1").val()
setHeightKeyWord('bbb', $keyword, 'Red', true)
});
});
function setHeightKeyWord(id, keyword, color, bold) {
if (keyword == "")
return;
var tempHTML = $("#" + id).html();
var htmlReg = new RegExp("\<.*?\>", "i");
var arrA = new Array();
for (var i = 0; true; i++) {
var m = htmlReg.exec(tempHTML);
if (m) {
arrA[i] = m;
}
else {
break;
}
tempHTML = tempHTML.replace(m, "[[[[" + i + "]]]]");
}
var replaceText
if (bold)
replaceText = "<b style='color:" + color + ";'>$1</b>";
else
replaceText = "<font style='color:" + color + ";'>$1</font>";
var arrayWord = keyword.split(',');
for (var w = 0; w < arrayWord.length; w++) {
var r = new RegExp("(" + arrayWord[w].replace(/[(){}.+*?^$|\\\[\]]/g, "\\$&") + ")", "ig");
tempHTML = tempHTML.replace(r, replaceText);
}
for (var i = 0; i < arrA.length; i++) {
tempHTML = tempHTML.replace("[[[[" + i + "]]]]", arrA[i]);
}
$("#" + id).html(tempHTML);
}
</script>