jquery implements the method of highlighting page keywords

The example of this article describes the method of jquery to highlight the page keywords. Share with you for your reference. The specific analysis is as follows:

Highlight the page search keywords through jquery
Support Chinese multi-word page highlighting

1. The JavaScript code is as follows:

jQuery.fn.extend({

    highlight: function(search, configs){

        if(typeof(search) == 'undefined') return;

        var configs =  jQuery.extend({

            insensitive: 1, // Match case or not   0 matching  1 Don't match 

            hls_class: 'highlight', //  Highlighting the class

            clear_last: true, //  Clear the previously highlighted result 

        },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 : "<strong class=\""+ configs.hls_class +"\">" + c + "</strong>";

        }));

    },

    unicode: function(s){ 

         var len=s.length; 

         var rs=""; 

         s = s.replace(/([-.*+?^${}()|[\]\/\\])/g,"\\$1");

         for(var i=0;i<len;i++){

            if(s.charCodeAt(i) > 255)

                rs+="\\u"+ s.charCodeAt(i).toString(16);

            else rs +=  s.charAt(i);

         }   

         return rs; 

    }  

});

2. The highlight plug-in can be downloaded here.

I hope this article is helpful for you to design jQuery program.