1、split()
var arrString = 'abcdaabc';
var s = arrString.split("")
console.log(s)
// ["a", "b", "c", "d", "a", "a", "b", "c"]
2、[].slice.call() 或 Array.prototype.slice.call()
var s = [].slice.call(arrString)
//["a", "b", "c", "d", "a", "a", "b", "c"]
3、Object.values()
var arrString = 'abcdaabc';
var s = Object.values(arrString)
console.log(s)
// ["a", "b", "c", "d", "a", "a", "b", "c"]
4、Array.from()
如果字符串中有表情等特殊字符时就要用到 Array.from
var arrString = 'abcdaabc?';
var s = Array.from(arrString)
console.log(s)