JS 字符串转数组

方法一:

　

1 　var s = \'1231231\';
2 　var arr = [];
3 　for (a = 0; a < s.length; a++) {
4     　arr.push(parseInt(s[a]))
5 　}
6 　console.log(arr)

 

 

方法二:

      

1 var s = \'1231231\';
2 var b = [];
3 for (a = 0; a < s.length; a++) {
4   b.push(s[a])
5 }
6 var arr = b.map(Number)
7 console.log(arr) //[1, 2, 3, 1, 2, 3, 1]

 

 

方法三(最简化):

var s = \'1231231\';
var arr = s.split(\'\').map(Number);
console.log(arr) //[1, 2, 3, 1, 2, 3, 1]

方法四(Vue):

let str = \'132131\';
let str1 = Array.from(str);
let arr = [];
str1.forEach(function(item, index, str1) {
arr.push(item * 1)  //隐式转换
   return arr;
})
console.log(arr);