JavaScript Quick Tips #2

04/28/2013, Sun

Categories: #JavaScript

Concatenating when Logging without the Plus Sign

You can use the comma in place of the plus sign when concatenation is needed.

// Give the Comma a Try When Logging

var stuff = "my stuff";
// the comma acts like the plus to concatenate your strings
console.log("some text:", stuff);

Attaching Properties to Non-Object Objects

Usually when you deal with an array you normally do not attach properties to it, but you are allowed to do such a thing.

// Attaching Property to an Array

var myArray = [1, 2, 3];
myArray.aKey = "myValue";
// outputs "myValue"
console.log(myArray.akey);

You can also do the same thing for a function and other non-object objects.

// Now Attaching Property to a Function

var myFunction = function () {};
// outputs "myValue"
myFunction.aKey = "myValue";

The reason you can do this is that everything in JavaScript is treated like an object. You may want to do this to include metadata on your arrays, functions or other variable types that are not object objects, but do use your discretion when an object is more fitting for the task.

WH