December 2012
Beginner
164 pages
3h 15m
English
Content preview from JavaScript EnlightenmentBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 2. Working with Objects and Properties
Complex Objects Can Contain Most of the JavaScript Values as Properties
A complex object can hold any permitted JavaScript value. Below, I
create an Object() object called
myObject and then add properties
representing the majority of values available in JavaScript.
<!DOCTYPE html><html lang="en"><body><script>
var myObject = {};
/* contain properties inside of myObject representing most of the native
JavaScript values */
myObject.myFunction = function() {};
myObject.myArray = [];
myObject.myString = 'string';
myObject.myNumber = 33;
myObject.myDate = new Date();
myObject.myRegExp = /a/;
myObject.myNull = null;
myObject.myUndefined = undefined;
myObject.myObject = {};
myObject.myMath_PI = Math.PI;
myObject.myError = new Error('Crap!');
console.log(myObject.myFunction,myObject.myArray,myObject.myString,
myObject.myNumber,myObject.myDate,myObject.myRegExp,myObject.myNull,
myObject.myNull,myObject.myUndefined,myObject.myObject,
myObject.myMath_PI,myObject.myError);
/* works the same with any of the complex objects, for example a function */
var myFunction = function() {};
myFunction.myFunction = function() {};
myFunction.myArray = [];
myFunction.myString = 'string';
myFunction.myNumber = 33;
myFunction.myDate = new Date();
myFunction.myRegExp = /a/;
myFunction.myNull = null;
myFunction.myUndefined = undefined;
myFunction.myObject = {};
myFunction.myMath_PI = Math.PI;
myFunction.myError = new Error('Crap!'); console.log(myFunction.myFunction,myFunction.myArray,myFunction.myString, ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.