eloquent javascript second edition

The original Published time: 2008-09-16--from my Baidu article [imported by moving tools]Before the forum was issued by the RM version, the capacity of almost 10G. Now this is the Flash version, only 1.2GA total of seven parts.Part One: http://www.eduxf.com/xiazai/Zhang Xiaoxiang javascript tutorial. rarPart II http://www.eduxf.com/xiazai/Zhang Xiaoxiang javascript tutorial two. rarPart III http://www.eduxf

value (number), Boolean (Boolean) are scalar (scalar) in this book is just a brief introduction.5. An array array is a set of values represented by a variable, and each value in the collection is an element of the array.The number of array elements is the length of the array, and the element to be added to the array is called padding (populating).Declaration method: var beatles = Array (number); var beatles=[];var beatles = new Array ();padding: array[index]=element; array elements can be of va

example from the JavaScript Advanced Programming (3rd Edition) to understand: Copy Code code as follows: Go to global scope, create global variable Object var color = "Blue"; function ChangeColor () { Go to ChangeColor scope, create changecolor corresponding variable object var anothercolor = "Red"; function Swapcolors (Color1, Color2) { Go to swapcolors scope, create sw

JavaScript and DOM, we can completely collect that information and insert it into the document using the SUP element.List of shortcut keysThe AccessKey property can associate an element (such as a link) with a specific key on the keyboard. This is useful for people who can't or don't like using a mouse to browse the Web.In general, in browsers for Windows systems, the use of shortcut keys is to press the ALT key and specific keys at the same time on

chapter I some basic conceptsHTML (Hyper-text markup language), constructs the static structure of the webpage, consists of a series of Dom;CSS (cascading style sheets), to add style to each part of the page structure;JavaScript, which allows the user to interact with a static web page by acquiring the DOM to add an action to the static structure;DOM, an API (application interface) that dynamically accesses and modifies structures or styles through th

The school textbooks are so rotten that they buy their own books.It was the beginning of the classic, the opening of the Startled me ~Nineth page ≯1.4/ch1_example2.html/1 Script>2 //Script block 23 document bgcolor="Red";4 Alert ("Second script block");5 Script>Run without passing, carefully examine the found1 document BgColor should be Document.bgcolorIf you say ". "Written" is a clerical error, then "bgcolor" in JavaScript is a beginner's mistak

JavaScript Basics Page (1) Undefined,null, Boolean, number, string and object(Arrays and functions) are not the same, are immutable; (5) Delete o.x can delete a property of an object, (6) Compound statement: use {} to enclose several statements to form a compound statement; empty statement:; directly with a semicolon; for example: for (var i=0; ivery difficult to optimize and run more slowly; For example: with (object); Statement Adds the stateme

is generally assigned to a variable variable = setTimeout ("function", interval)Cleartimeout is canceling a function that is waiting to be executed, and this method requires a parameter: cleartimeout (variable)moveelement () function (see the original book for an explanation of the function, which works like jquery's animate)functionmoveelement (elementid,final_x,final_y,interval) {if(!document.getelementbyid)return false; if(!document.getelementbyid (ElementID))return false; varElem =document.

types of nodes, not just the element nodes. almost everything becomes a node, and even spaces and line breaks are interpreted as nodes. 3.NodeType PropertiesYou can use Node.nodetype to get the NodeType property of a node Nodety of ELEMENT nodes The PE property value is 1, the property , the text note document 4. nodevalue properties 5. firstchild and lastchild properties corresponding to childnodes[0] and childnodes[childnodes.length-1 respect

Anchor objectsFrom ObjectArea ObjectImage ObjectLayer ObjectStyle objectDate ObjectMath ObjectString ObjectArray ObjectFunction objectObject objectsBoolean ObjectNumber ObjectOtherPublic properties and methodsinline function (top-level function)JavaScript AppendixAppendixColor List 1: Color of names defined in html4.01About web-safe colorsColor List 2:web Safety colorColor List 3:color NameFont Display sampleWeb Size ListTutorial Address: Detailed Ht

StatementAn expression is a phrase in JavaScript, and the statement is a JavaScript whole sentence or command. Use a period to end to separate statements. An expression evaluates a value, but the statement is used to execute to make something happen.5.2 Compound statements and empty statementsCompound statement: Enclose multiple statements in curly braces to form a conforming statement.{ x = Math.PI; CX =

() method to modify the array, but invalid for the string!! Five. Functions1. A function that initializes an object becomes a constructor (constructor).2. There are two ways of defining a function: A. Define statement b. expression3. Example 1: Traversing object property names and propertiesvar object = {' A ': ' 3 ', ' str ': ' Hello ', ' funcion ': ' fn ', ' B ': ' 0.618 '};function Printprops (obj) {for (var p in obj) Console.log (p + ":" + obj[p] + "\ n")};Printprops (object); //A:3Str:hell

() {Return age + Run ();}};}();The above example of a direct return object can also be written like this:var box = function () {var age = 100;Function Run () {Return ' running ... ';}var obj = {// Create literal objectGo:function () {Return age + Run ();}};Return obj; return This object}();The literal object declaration, in fact, can be regarded as a singleton pattern in the design pattern, so-called singleton mode, which is always an instance of preserving the Object.Enhanced module mode, whic

form submissions by first setting the Content-type header information to application/x-www-form-urlencoded, which is the type of content at the time the form was submitted, followed by creating a string in the appropriate format. The 14th chapter has discussed the format of the POST data in the same format as the query string. If you need to serialize the data for a form in a page and then send it to the server via XHR, you can use the Serialize () function described in chapter 14th to create t

which are contained in the array returned by the ChildNodes property.However, each node has a NodeType property. The NodeType attribute has a total of 12 desirable values, but only 3 of them have value: The NodeType attribute value of the element node is 1, the property node's NodeType property value is 2, and the NodeType property value of the text node is 3.If you want to change the value of a text node, use the NodeValue property provided by the DOM.Array element Childnodes[0] There is a mor

The author of this book is Nicholas C.zakas, blog address is http://www.nczonline.net/, we can go to more attention, Yahoo Front-end engineer, is Yui code contributor, can imagine this book has gold content, his books are widely praised. This book has been published in the second edition, and compared with the first version of the content update is very large, direct second version of the line. Do not be fooled by the title of "Advanced", as long as t

desired effect by using the following methods: function Createfuncrions () { var result = new Array (); for (var i = 0;i Each will return its own index value Impersonation block-level scopes Use anonymous functions to mimic block-level scopes: (function () { alert ("test");//block-level scope, without parentheses the function will be wrapped with an error The obvious disadvantage of using closures and private variables is that they look for more than one level in t

1. A document is a tree of nodes2. Nodes are divided into different types: element nodes, text nodes, attribute nodes, etc.3. Each node is an object, and the atom of the DOM is an element node4.getElementById returns an object that corresponds to a specific element node in the document5.getELementsByTagName and Getelementsbyclassname return an array of objects that correspond to a specific set of ELEMENT nodes in the document, respectively.The 6.typeof operator can tell us whether its operand is

From last year, because it is too long, there is always no way to read it, plus it and the second version of the majority of the same, read more interested in a little bit.Compared with the second version, its biggest change is to add a lot of HTML5 content, such as: Something new Object objects, data properties, accessor properties and some corresponding methods, such as its comparison and summary of common cross-domain methods: POSTMESSAGE,IE8 XDR, upgraded XHR, JSONP cross-domain principle, o

False2. Range of valuesDue to memory limitations, ECMAScript cannot save all the values in the world, and the smallest value ECMAScript can represent is saved in Number.min_value, which is 5e-324 in most browsers. The maximum value that can be represented is saved in Number.MAX_VALUE, which is 1.7976931348623157e+308 in most browsers. If the result of a calculation is given a value that is outside the range of JavaScript values, if the value is negat