删除数组中某个指定元素的值_如何删除数组中的元素

Array.prototype.indexOf = function(val) { 
    
for (var i = 0; i < this.length; i++) { 
    
if (this[i] == val) return i; 
} 
return -1; 
};

Array.prototype.remove = function(val) { 
    
var index = this.indexOf(val); 
if (index > -1) { 
    
this.splice(index, 1); 
} 
};

var arr= ['ab','cd','ef','gh']

arr.remove('cd');