javascript 字符串，数字，方法JavaScript

Posted 2021-05-04

"use strict"

let theString = 'Hello, my name is Brad and I love JavaScript';

// startsWith()
// endsWith()
// includes()

//console.log(theString.startsWith('Hello'));
//console.log(theString.endsWith('JavaScript'));
//console.log(theString.includes('love'));

//Hex
//console.log(0xFF);
// Binary
//console.log(0b101011);
// Octal
//console.log(0o543);

//console.log(Number.isFinite(NaN));
//console.log(Number.isNaN('string'));
//console.log(Number.isInteger(Infinity));