Using regexp replace in JavaScript

Question

如何在JavaScript中使用replace regex去除句子中不是字母，数字或空格的所有内容？

var string = "here is a sentence with letters and numbers and symbols 123!@#";

Answer 1

 var string = "here is a sentence with letters and numbers and symbols 123!@#"; var x = string.replace(/[^a-zA-Z0-9 ]/g,'') console.log(x)