JS-29 数组的遍历

数组的遍历可以考虑使用for循环或while循环

var a=['abc','zifuchuan','de'];

//for循环

for（var i=0;i<a.length;i++）{

　　console.log(a[i]);

}

//while循环

var i =0;

while(i<a.length){

console.log(a[i]);

i++;

}

for...in遍历数组

var a=['abc','zifuchuan','de'];

for (var i in a){

console.log(a[i]);

}