deal with href remove the same element

var url="http://zhidao.baidu.com/question/193641504.html?name=tom&age=28";
function getName(url, name){
var firstarr = url.split("?");
var secarr = firstarr[1].split("&");
var thirdarr = [];
for(var i=0; i<secarr.length; i++){
thirdarr[i] = secarr[i].split("=");
}
for(var j=0; j<thirdarr.length; j++){
if(thirdarr[j][0]==name){
return thirdarr[j][1];
}
}
return false;
}
//var myvalue = getName(url,"name");
//document.write(myvalue);
var duplicatedarr = [1,2,3,"a","b","e","a",7,8,3,"s","b","e","d",4,7,3];
function removeduplicateitem(arr){
for(var i=0; i<arr.length; i++){
for(var j=i+1; j<arr.length;j++){
if(arr[i]==arr[j]){
//delete arr[j];
arr.splice(j,1);
}
}
}
return arr;
}