JavaScript移除数组元素

//数组移除长度方法
 
var array=[];
array[0]="张三";
array[1]="李四";
array[2]="王五";
array[3]="赵六";
array[4]="百度";
 
function remove(array,index){
  if(index<=(array.length-1)){
    for(var i=index;i<array.length;i++){
        array[i]=array[i+1];
    }
  }else{
    throw new Error('Array index out of bounds!for function is:remove');
  }
  array.length=array.length-1;
  return array;
}
 
try{
  array=remove(array,2);
  array=remove(array,2);
  alert(array.length);
  alert(array);
}catch(e){
  alert(e);
}