js 筛选字符串

const str = "Hello 123 World 456";
const numbers = str.match(/\d+/g);
console.log(numbers); // 输出: ["123", "456"]

const str = "Hello, World! This is a test.";
const words = str.split(/\W+/).filter(word => word.length > 0);
console.log(words); // 输出: ["Hello", "World", "This", "is", "a", "test"]

const text = "This is a test. JavaScript is awesome. Testing is fun.";
const keyword = "test";
const sentences = text.match(new RegExp(`[^.]*${keyword}[^.]*`, 'gi'));
console.log(sentences); // 输出: ["This is a test", "Testing is fun"]

const str = "Hello World";
const match = str.match(/hello/i); // 使用 i 标志进行不区分大小写的匹配
console.log(match); // 输出: ["Hello"]

const str = "Hello, World!";
const words = str.split(/, |!/).filter(word => word.length > 0);
console.log(words); // 输出: ["Hello", "World"]