jquery实现页面关键词高亮显示的方法_jquery

jQuery.fn.extend({
highlight: function(search, configs){
if(typeof(search) == 'undefined') return;
var configs = jQuery.extend({
insensitive: 1, //是否匹配大小写 0匹配 1不匹配
hls_class: 'highlight', // 高亮后的class
clear_last: true, // 清除原来高亮的结果
},configs);
if(configs.clear_last) {
$(this).find("strong."+configs.hls_class).each(function(){
$(this).after($(this).text());
$(this).remove();
})
}
return this.each(function() {
if(typeof(search) == "string") {
$(this).highregx(search,configs);
} else if (search.constructor === Array ) {
for(var query in search){
var search_str = $.trim(search[query]);
if(search_str != "") $(this).highregx(search_str,configs);
}
}
});
},
highregx: function(query,configs){
query = this.unicode(query);
var regex = new RegExp("(<[^>]*>)|("+ query +")", configs.insensitive ? "ig" : "g");
this.html(this.html().replace(regex, function(a, b, c){
return (a.charAt(0) == "<") ? a : "" + c + "";
}));
},
unicode: function(s){
var len=s.length;
var rs="";
s = s.replace(/([-.*+?^${}()|[\]\/\\])/g,"\\$1");
for(var i=0;i if(s.charCodeAt(i) > 255)
rs+="\\u"+ s.charCodeAt(i).toString(16);
else rs += s.charAt(i);
}
return rs;
}
});