JavaScript中匹配空格或者冒号

const str = "Welcome to geek-docs.com";
const regex = /\s/g;
const matches = str.match(regex);
console.log(matches);

const str = "Hello world, welcome to geek-docs.com";
const newStr = str.replace(/\s/g, "_");
console.log(newStr);

const str = "HelloWorld";
const hasSpace = /\s/.test(str);
console.log(hasSpace);

const str = "geek-docs.com: your ultimate tech guide";
const regex = /:/g;
const matches = str.match(regex);
console.log(matches);

const str = "JavaScript: the good parts";
const newStr = str.replace(/:/g, ",");
console.log(newStr);

const str = "JavaScript: the good parts";
const hasColon = /:/.test(str);
console.log(hasColon);

const str = "Hello: world, welcome to geek-docs.com";
const regex = /[\s:]/g;
const matches = str.match(regex);
console.log(matches);

const str = "Hello: world, welcome to geek-docs.com";
const newStr = str.replace(/[\s:]/g, "!");
console.log(newStr);

const str = "Hello:world";
const hasSpaceOrColon = /[\s:]/.test(str);
console.log(hasSpaceOrColon);