nulayuhz

	//set number to zero if it's null or empty for number field.
	function numberFieldChangedEvent(field, fieldName, model, invalid) {
		field = field.replace(/[^(0-9.)]/g, ''); //allow only numbers and dots
		model[fieldName] = field;
	}
	
	function commaSeparateNum(field, fieldName, model) {
		// remove extra dots
		var tempString = field.toString();
		if (tempString.indexOf('.') !== -1) {

nulayuhz

            // Reset Zoom
            self.resetZoom = function() {
                var objects = canvas.getObjects();
                for (var i in objects) {
                    var scaleX = objects[i].scaleX;
                    var scaleY = objects[i].scaleY;
                    var left = objects[i].left;
                    var top = objects[i].top;

nulayuhz

function expression:
  foo() //try to call foo TypeError!
  var foo = function () {
    // do something
  };
  
is more like:
  var foo;
  
  foo() //try to call foo TypeError!

nulayuhz

"lexical scope is based on where variables and blocks of scope are authored, by you, at write time, and thus is (mostly) set in stone by the time the lexer processes your code."

https://github.com/getify/You-Dont-Know-JS/blob/master/scope%20&%20closures/ch2.md#lex-time

nulayuhz

This is nice to have when you're working on a .Net project that runs inside of a Parallels/VirtualBox VM. Even more important if you are building a mobile site which needs to run on an iPhone. The iPhone emulator does not run in Windows, so during development it is useful to have the Visual Studio server visible to the host operating system.

These instructions were found over here on StackOverflow.

Use Fiddler 2 as a Reverse Proxy to listen on any port (8080 or 8888) and forward those requests to Visual Studio's built-in web server.

Follow the Fiddler setup instructions. The only tricky part here is to use regedit to set a new registry key, a new DWORD named ReverseProxyForPort inside HKEYCURRENTUSER\SOFTWARE\Microsoft\Fiddler2. In this case we set the value to 3480, which is the default server port in Visual S

nulayuhz

var year = new Date().getFullYear();
var tenYears = [];
for (var i = 0; i < 10; i++) {
    tenYears.push(year++);
}

console.log(tenYears);

nulayuhz

function foo() {
    var a = 2;

    function bar() {
        console.log( a );
    }

    return bar;
}

nulayuhz

https://github.com/getify/You-Dont-Know-JS/blob/master/scope%20&%20closures/ch5.md

Closure is when a function is able to remember and access its lexical scope even 
when that function is executing outside its lexical scope.

function foo() {
    var a = 2;

    function bar() {
        console.log( a ); // 2

nulayuhz

https://github.com/getify/You-Dont-Know-JS/blob/master/scope%20&%20closures/ch4.md#functions-first

nulayuhz

https://github.com/getify/You-Dont-Know-JS/blob/master/scope%20&%20closures/ch4.md

"When you see var a = 2;, you probably think of that as one statement. 
But JavaScript actually thinks of it as two statements: var a; and a = 2;.
The first statement, the declaration, is processed during the compilation phase.
The second statement, the assignment, is left in place for the execution phase."

- declaration comes before the assignment
- function declarations are hoisted, but function expression are not