正则判断手机号，qq，颜色，邮箱

[Sunny Fu]

// 手机号
let reg1 = /^1[44578]\d{9}$/g;
let str1 = '15928229999'
console.log(reg1.test(str1));
// qq号
let reg2 = /^[1-9][0-9]{4,9}$/g;
let str2 = '159222'
console.log(reg2.test(str2));

// 颜色
let reg3 = /#?([0-9a-fA-F]{6}|[0-9a-fA-F]{3})/g;
let str3 = '#abc'
console.log(reg3.test(str3));
// 邮箱
let reg4 = /^([A-za-z0-9_\-\.]+)+@([A-za-z0-9_\-\.]+)\.([A-Za-z]{2, 6})$/g;//+一到多
var reg = /^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/;
let str4 = '[e-mail]'
console.log(reg4.test(str4));

[kangkang123269]

1. 判断手机

const isPhoneNumber = (number) => {
  const regex = /^1[3456789]\d{9}$/;
  return regex.test(number);
}

console.log(isPhoneNumber('13912345678')); // true
console.log(isPhoneNumber('12345678901')); // false

2. 判断QQ

const isQQNumber = (number) => {
  const regex = /^[1-9][0-9]{4,}$/;
  return regex.test(number);
}

console.log(isQQNumber('12345')); // false
console.log(isQQNumber('123456')); // true

3. 判断颜色

const isColorCode = (color) => {
  const regex = /^#([0-9a-fA-F]{6}|[0-9a-fA-F]{3})$/;
  return regex.test(color);
}

console.log(isColorCode('#123')); // true
console.log(isColorCode('#aabbcc')); // true
console.log(isColorCode('#ffffff')); // true
console.log(isColorCode('#0000000')); // false

4. 判断邮箱

const isEmail = (email) => {
  const regex = /^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/;
  return regex.test(email);
}

console.log(isEmail('[e-mail]')); // true
console.log(isEmail('[e-mail]')); // true
console.log(isEmail('example@mail')); // false

[veneno_o]

// 手机
const reg1 = /^1[3-9]\d{9}$/g;

// qq
const reg2 = /^[1-9]\d{4,}$/g;

// 颜色
const reg3 = /^#([a-fA-F0-9]{3}|([a-fA-F0-9]{6}))$/g;

// email
const reg4 = /^[\w-]+@[\w-]+(\.[\w-]+)+$/g;