javascript匹配tag词

function ralatebaikekw(subject, message)
{  
	if(isUndefined(subject) || subject == -1) {
		subject = $('subject').value;
		subject = subject.replace(/<\/?[^>]+>|\[\/?.+?\]|"/ig, "");
		subject = subject.replace(/\s{2,}/ig, ' ');
	}

	if(isUndefined(message) || message == -1) {
		message = getEditorContents();
		var Contents = message;
		message = message.replace(/<\/?[^>]+>|\[\/?.+?\]|"/ig, "");
		message = message.replace(/\s{2,}/ig, ' ');
		message = message.replace(/\[.+?\]/ig,'');
	}

	message = message.replace(/&/ig, '', message).substr(0, 500);
	subject =  encodeURIComponent(subject);
	message =  encodeURIComponent(message);
	
	var i=0;
	var tag_arr = new Array();
	
	for(var w in jsonallbaike) {
		var count1 =  count = 0; 
		tag_arr[i] = [];
		if(subject.indexOf(jsonallbaike[w]['entry_name'])!='-1') {
			count = countInstances(subject, jsonallbaike[w]['entry_name']);   
			count1 += count*2;	
		}

		if(message.indexOf(jsonallbaike[w]['entry_name'])!='-1') {
			count = countInstances(message, jsonallbaike[w]['entry_name']); 
			count1 += count*1.5; 	
		}
		if(count1 != '') {
			tag_arr[i]['entry_name'] = jsonallbaike[w]['entry_name'];
			tag_arr[i]['entry_id'] = jsonallbaike[w]['entry_id'];
			tag_arr[i]['url'] = jsonallbaike[w]['url'];
			tag_arr[i]['count'] = count1;       
			i++;    
		}
	}
	
	for(var k in tag_arr) {
		var entry_name = ""+tag_arr[k]['entry_name']+"";
		for(var y in tag_arr){
			var entry_name1 = ""+tag_arr[y]['entry_name']+"";
			if((entry_name1.indexOf(entry_name)!='-1')&&(entry_name!=entry_name1)){
				tag_arr[k]['count'] = tag_arr[y]['count']-1;
			}
		}
	}

	var taglen = tag_arr.length;

	for(var i=0; i<taglen; i++) {  			  
		var  exchange = false;  	  
		for(var j=taglen-2; j>=i; j--) {  
			if((tag_arr[j+1]['count']) > (tag_arr[j]['count'])) {  
				var temp = tag_arr[j+1];  
				tag_arr[j+1] = tag_arr[j];  
				tag_arr[j] = temp;  
				exchange = true;  
			}  			  
		}  			  
		if(!exchange) break;  			  
	}  

	var str = '';
	var txt = '';

	//Contents = encodeURIComponent(Contents);
	
	for(var a in tag_arr){

		if(String(tag_arr[a]['entry_name'])!='undefined'&&tag_arr[a]['count']!=0){

			str += tag_arr[a]['entry_name']+'|'+tag_arr[a]['url']+",";
			txt += tag_arr[a]['entry_name']+",";
			//Contents = Contents.replace(tag_arr[a]['entry_name'], "<a href='http://baike.onlylady.com/"+tag_arr[a]['url']+"/' target='_blank'>"+decodeURIComponent(tag_arr[a]['entry_name'])+"</a>");
		}
	}

	$('hiddenbaiketags').value =  decodeURIComponent(RTrim(str));
	$('baiketags').value =  decodeURIComponent(RTrim(txt));

	//editdoc.body.innerHTML = decodeURIComponent(Contents);

	console.log(decodeURIComponent(RTrim(str)));
}