JavaScript从数组中删除指定值元素的方法

Js代码

function removeByValue(arr, val) {  
  for(var i=0; i<arr.length; i++) {  
    if(arr[i] == val) {  
      arr.splice(i, 1);  
      break;  
    }  
  }  
}  
var somearray = ["mon", "tue", "wed", "thur"]  
removeByValue(somearray, "tue");  
//somearray will now have "mon", "wed", "thur"

为数组对象增加相应的的方法

Js代码

Array.prototype.removeByValue = function(val) {  
  for(var i=0; i<this.length; i++) {  
    if(this[i] == val) {  
      this.splice(i, 1);  
      break;  
    }  
  }  
}  
var somearray = ["mon", "tue", "wed", "thur"]  
somearray.removeByValue("tue");  
//somearray will now have "mon", "wed", "thur"