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Damien Maillard dmail

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Senior front end developer

dmail / file-using-lazy-error.js

Created October 3, 2016 19:56

Example of a function lazyly throwing an error thus potentially loosing error cause

	import lazy from './lazy-error.js';

	const fn = lazy();

	function test() {
	fn();
	}

	test();

dmail / function-prototype-bind-soft.js

Last active September 15, 2016 09:57

Experimental Function.prototype.bind that does not force this when it's explicitely passed by call() or apply()

	if (!Function.prototype.bindSoft) { // set once
	const originalFunctionSymbol = Symbol();
	Function.prototype.bindSoft = function(thisValue) {
	const originalFunction = this;
	const boundFunction = originalFunction.bind(thisValue);
	// store pointer to original function
	boundFunction[originalFunctionSymbol] = originalFunction;
	return boundFunction;
	};

dmail / clone-function.js

Last active August 26, 2016 11:06

JavaScript Function cloning implementation and documentation

	function cloneFunction(fn, mode = 'primitive') {
	var clonedFn;

	if (mode === 'primitive') {
	clonedFn = fn;
	} else if (mode === 'construct') {
	clonedFn = new Function('return ' + fn.toString())();
	} else if (mode === 'wrap') {
	let Constructor;
	clonedFn = function() {

dmail / framB.html

Created August 5, 2016 13:34

Testing Symbol.toStringTag across frames

	<HTML>
	<HEAD>
	<TITLE>JavaScript Example 14</TITLE>
	</HEAD>
	<BODY>
	<FORM name="form1">
	<INPUT type="text" name="text1" size="25" value="">
	</FORM>
	<script>
	window.GLOBAL_ARRAY = [];

dmail / clone-descendant-deep.js

Created April 28, 2016 09:27

Sort of node.cloneNode(true) on descendant only

	// will return a cloned version of rootNode descendants
	// in itself this function is useless but it can be modified to add custom cloning behaviour
	function cloneNodeDeep(rootNode) {
	var node = rootNode;
	var rootClone = document.createDocumentFragment();
	var nodeClone = rootClone;
	while (node) {
	var nextNode = null;
	var firstChild = node.firstChild;
	if (firstChild) {

dmail / node-iterate-mess.js

Last active September 18, 2017 15:50

Node iteration mess

	function readNodeAt(rootNode, path) {
	var i = 0;
	var j = path.length;
	var index;
	var found = rootNode;

	for (;i < j; i++) {
	index = Number(path[i]);
	found = found.childNodes[index];
	if (found === null) {

dmail / one-percent-then.js

Last active November 28, 2015 16:45

Illustration of a case where you have register then() without using catch

	var Promise = require('bluebird');
	var fs = Promise.promisifyAll(require('fs'));
	var existingFile = 'path/to/existing/file';
	var unexistingFile = 'path/to/unexisting/file';
	var statPromise = fs.stat(existingFile);

	function onStatResolution(stat){
	return fs.readFile(unexistingFile);
	}

dmail / countdown.html

Created October 5, 2015 13:47

A countdown based on jQuery finalcountdown

dmail / multilang-trans.js

Created October 5, 2015 06:58

multilang using data-trans attribute

	var Lang = {
	name: undefined,
	availables: ['fr', 'en', 'de'],

	detect: function(){
	var languages = window.navigator.languages, preferredLanguage;

	if( languages ){
	languages = languages.map(function(language){
	var lang;

dmail / object-fit-cover-video.js

Created October 5, 2015 06:50

object-fit:cover polyfill on video element using canvas

	// http://stackoverflow.com/questions/21961839/simulation-background-size-cover-in-canvas
	function drawImageProp(ctx, img, x, y, w, h, offsetX, offsetY) {
	if (arguments.length === 2) {
	x = y = 0;
	w = ctx.canvas.width;
	h = ctx.canvas.height;
	}

	// default offset is center
	offsetX = typeof offsetX === "number" ? offsetX : 0.5;