如何将这个多维数组每一项中的字符串改为Number类型

Question

this.array = [  ['0.6','138'],  ['0.674','135'],  ['0.77','81'],  ['0.8','5']];我查到到的es6方法是使用map，我结合for循环这样去做，但是不知道怎么把改变之后的值赋值给原来的this.array了.......用push报错了... 写了一天代码脑袋有点晕for (let index = 0; index < this.array.length; index++) {  const element = this.array[index];  let arr = element.map(function(i){     return +i;  })  // let myArray= this.array.push(arr)  //报错了  // this.array= myArray;}

Answer 1

this.array=this.array.map(v=>v.map(Number))

Answer 2

let myArray = []

for (...) {

  ...

  myArray.push(arr)

}

this.array= myArray;