数值数组与字符串数组转换

数值数组转字符串数组

方法一：
var arr1 = [1, 2, 5];
arr1 = arr1.map(String);  //将arr1转换为字符串数组
console.log(arr1);//结果： ["1","2","5"]

方法二：
var arr1 = [1, 2, 5];
arr1 = arr1.toString(); //将arr1转换为字符串，结果为："1,2,5"
arr1=arr1.split(",");//将arr1转换为数组，分隔符为",",结果为["1", "2", "5"]

字符串数组转数值数组

方法一：
var arr1 = ["1","2","5"];
arr1 = arr1.map(Number);  //将arr1转换为数值数组
console.log(arr1);//结果： [1,2,5]

方法二：
var arr1 = ["1","2","5"];
for(let i=0;i<arr1.length;i++){
    arr1[i] = parseInt(arr1[i])
}        
console.log(arr1);// 结果为：[1,2,5]