判断html标签是否闭合

function TagClose(content){
    for(var i=0;i<myArray.length;i++){
       var reBegin = new RegExp("<"+myArray[i],"ig");
       var reEnd = new RegExp("<\/"+myArray[i],"ig");
       var begin = 0;
       var end = 0;
       var begMactches = content.match(reBegin);
       var endMactches = content.match(reEnd);
       if(begMactches!=null){
           for(var k=0;k<begMactches.length;k++){
              begin++;
           }
       }
       if(endMactches!=null){
           for(var j=0;j<endMactches.length;j++){
              end++;
           }
       }
       if(begin!=end){
           alert("代码中含有未闭合的【"+myArray[i]+"】标签,请检查后再进行插入");
           return false;
       }
    }
    begMactches = content.match(new RegExp("<\!\-\-","ig"));
    endMactches = content.match(new RegExp("\-\->","ig"));
    var a = 0;
    var b = 0;
    if(begMactches!=null){
        //alert(begMactches.length);
        for(var n=0;n<begMactches.length;n++){
           a++;
        }
    }
    if(endMactches!=null){
       for(var m=0;m<endMactches.length;m++){
          b++;
       }
    }
    if(a!=b){
       alert("代码中含有未闭合的【<!-- -->】标签,请检查后再进行插入");
       return false;
    }
    return true;
}