js打印数组,js打印对象的方法

//打印对象
function writeObj(obj){
var description = "";
for(var i in obj){
var property=obj[i];
description+=i+" = "+property+"n";
}
alert(description);
}

//打印数组
function print_array(arr){
for(var key in arr){
if(typeof(arr[key])=='array'||typeof(arr[key])=='object'){//递归调用


print_array(arr[key]);
}else{
document.write(key + ' = ' + arr[key] + '<br>');
}
}
}

var a=new Array(0,1,2,3,4,new Array('dog','cat','mao'));
print_array(a);