var yourArray = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15];
document.writeln(myArraypare(yourArray)); // outputs: true;-->
Array.prototypepare = function(testArr) {
if (this.length != testArr.length) return false;
for (var i = 0; i < testArr.length; i++) {
if (this[i]pare) {
if (!this[i]pare(testArr[i])) return false;
}
if (this[i] !== testArr[i]) return false;
}
return true;
}
//去掉数组中重复的值var a = new Array("5","7","7"); a.unique();
Array.prototype.unique = function() {
var data = this || [];
var a = {}; //声明一个对象，javascript的对象可以当哈希表用
for (var i = 0; i < data.length; i++) {
a[data[i]] = true; //设置标记，把数组的值当下标，这样就可以去掉重复的值
}
data.length = 0;
for (var i in a) { //遍历对象，把已标记的还原成数组
this[data.length] = i;
}
return data;
}
Array.prototype.addAll = function($array)
{
if($array == null || $array.length == 0)
return;
for(var $i=0; $i<$array.length; $i++)
this.push($array[$i]);
}
Array.prototype.contains = function($value)
{
for(var $i=0; $i<this.length; $i++)
{
var $element = this[$i];
if($element == $value)
return true;
}
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return false;
}
Array.prototype.indexOf = function($value)
{
for(var $i=0; $i<this.length; $i++)
{
if(this[$i] == $value)
return $i;
}
return -1;
}
if (!Array.prototype.lastIndexOf)
{
Array.prototype.lastIndexOf = function(elt /*, from*/)
{
var len = this.length;
var from = Number(arguments[1]);
if (isNaN(from))
{
from = len - 1;
}
else
{
from = (from < 0)
? Math.ceil(from)
: Math.floor(from);
if (from < 0)
from += len;
else if (from >= len)
from = len - 1;
}
for (; from > -1; from--)
{
if (from in this &&
this[from] === elt)
return from;
}
return -1;
};
}
Array.prototype.insertAt = function($value, $index)
{
if($index < 0)
this.unshift($value);
else if($index >= this.length)
this.push($value);
else
this.splice($index, 0, $value);
}
/**
* 根据数组的下标来删除元素
*/
Array.prototype.removeByIndex=function($n) {
if($n<0){ //如果n<0，则不进行任何操作。
return this;
}else{
return this.slice(0,$n).concat(this.slice($n+1,this.length));
}
}
//依赖indexOf
Array.prototype.remove = function($value)
{
var $index = this.indexOf($value);
if($index != -1)
this.splice($index, 1);
}
Array.prototype.removeAll = function()
{
while(this.length > 0)
this.pop();
}
Array.prototype.replace = function($oldValue, $newValue)
{
for(var $i=0; $i<this.length; $i++)
{
if(this[$i] == $oldValue)
{
this[$i] = $newValue;
return;
}
}
}
Array.prototype.swap = function($a, $b)
{
if($a == $b)
return;
var $tmp = this[$a];
this[$a] = this[$b];
this[$b] = $tmp;
}
Array.prototype.max = function() {
return Math.max.apply({}, this);
}
Array.prototype.min = function() {
return Math.min.apply({}, this);
}
Array.prototype.splice = function(start, delLen, item){
var len =this.length;
start = start<0?0:start>len?len:start?start:0;
delLen=delLen<0?0:delLen>len?len:delLen?delLen:len;
var arr =[],res=[];
var iarr=0,ires=0,i=0;
for(i=0;i<len;i++){
if(i<start|| ires>=delLen) arr[iarr++]=this[i];
else {
res[ires++]=this[i];
if(item&&ires==delLen){
arr[iarr++]=item;
}
}
}
if(item&&ires<delLen) arr[iarr]=item;
for(var i=0;i<arr.length;i++){
this[i]=arr[i];
}
this.length=arr.length;
return res;
}
Array.prototype.shift = function(){ if(!this) return[];return this.splice(0,1)[0];}
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