JavaScript从数组中删除指定值元素的方法

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"

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"