如何从字符串数组中删除字母并转换为数字

Question

有人可以帮我吗，我需要从字符串数组中删除字母并将其转换为数字数组，这就是我所做的但没有做对。

 const fruits = [" 2", " 1", " 0", "remove this", " 1", " 2", " 0", " 0", " 1", " 0"]; let text = fruits.toString(); var f = text.replace(/[azAZ]/g, ""); var h = f.split(","); h.filter(n => n) console.log(h)

Answer 1

将它们转换为Numbers并删除那些不是的：

nums = fruits.map(Number).filter(x => !Number.isNaN(x))

Answer 2

您可以将字符串乘以 1 进行转换并检查它是否为数字

const fruits = [" 2", " 1", " 0", "remove this", " 1", " 2", " 0", " 0", " 1", " 0"];

console.log(fruits.filter((v)=> !Number.isNaN(v*1)).map((v)=> Number(v) * 1));

Answer 3

您可以使用 isNaN 函数来检查变量是否为数字。 这是代码：

const fruits = [" 2", " 1", " 0", "remove this", " 1", " 2", " 0", " 0", " 1", " 0"];

var nums=[]; // array for numbers

for( let i = 0; i < fruits.length ;i++){
    if(!isNaN(fruits[i])) // check if the value is number or not
    nums.push(parseInt(fruits[i]));//add numbers in array with int parsing
}

console.log(nums) //print the array of numbers only