Quinn Sheng a1exlism

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Key to the Keys

	let str = 'PathofExile \nThe world path of Game';

	// match: Reg with/withou `g` flag
	let reg = /(path)\s*/ig;
	let reg2 = /(path)\s*/i;

	let result1 = str.match(reg);

	console.log(reg.lastIndex); // 0

	The expression will only match from its `lastIndex` position and `ignores` the global (g) flag if set.


	let reg = /^foo/y;

	let reg2 = new RegExp(reg.source, 'my');

	reg.test('foo'); // false

	reg.lastIndex = 1;

	/*
	* ul insert 1000 li tag
	*/
	let ul = document.querySelectorAll('.list');
	console.time('no frag');
	for(let i = 0; i < 1000; ++i) {
	let li = document.createElement('li');
	li.textContent = 'No ' + i;
	ul[0].appendChild(li);
	}

	/**
	* 题目要求！
	* function repeat (func, times, wait) {
	* }
	* 这个函数能返回一个新函数，比如这样用
	* var repeatedFun = repeat(alert, 10, 5000)

	* 调用这个 repeatedFun ("hellworld")
	* 会alert十次 helloworld, `每次`间隔5秒
	*/

	/*
	* https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/test
	* Jack(?!Chen)
	* Negative lookahead \| only mach Jack OR Jack+(anything not match `Chen`)
	*/

	let str = 'JackBlack is not my friend.';
	let tmpStr = 'JackChen is my friend.';
	let withoutG= /Jack(?!Chen)/;
	let withG = /Jack(?!Chen)/g;

	# Refer Page: https://erocode.com/2017/12/08/mac-os-lost-user/

	# === Reboot Mac in real Root mode ===
	reboot => holding Command + S(uper)

	/sbin/mount -uaw
	rm var/db/.AppleSetupDone

	reboot

	let strA = 'JackChen is my friend.';
	let strB = 'JackBlack is not my friend.';


	// x(?=y) x is followed by y

	let regX = /Jack(?=Chen)/g;
	console.log(regX.test(strA)); // true
	console.log(regX.test(strB)); // false

	function isInt(i) {
	return (typeof i == "number") && !(i % 1) && !isNaN(i);
	}

	/* package.json */
	{
	/* add --mode in webpack4.x */
	"scripts": {
	"dev": "cross-env DEBUG=true webpack-dev-server --open",
	},
	/* ... */
	}