JavaScript

Learn the contents of chapters fourth and fifthGarbage collectionJavaScript has an automatic garbage collection mechanism, local variables exist only during function execution, and in this process, local variables are allocated space on the stack

We know a way to define a common object in JavaScript, such as: Let obj == 1= ' string 'function() {alert (' func '= [' x ', ' Y ']; Console.log (obj.num); // 1console.log (obj.string); // "string"Console.log (obj.func); // function ()

h5edu  agency official HTML5 training   Tutorial, Main introduction: JavaScript Intensive tutorial  -- style, Currentstyle, getComputedStyle differences Introduction Style, Currentstyle, getcomputedstyle differences introduced the stylesheet has

Introduction to the object:Description: Object is a reference type, and a reference type is a data structure used to organize data and functionality together, such as var newObj = new Object (), which creates a new instance of the Object reference

By reading the "JS Advanced Program Design" This book, the scope of JS and the scope of the chain knowledge has a preliminary understanding and understanding, ready to take notes for your reference, notes in more words, but personally think the

1. The importance of prototype mode is not only in the creation of custom types, but even all native reference types (obejct, Array, String, and so on) define methods and properties on the constructor's prototype. The following code can prove:

1. Arithmetic OperatorsAdd, subtract, multiply, divide, and balance, where % is the remainder operation+ operatorA. If the plus sign is a string, then the plus sign is connected.B. If both sides of the plus sign are numeric, then the plus sign is

If statement:Note: For expressions in parentheses in the IF statement, JS automatically calls the Boolean () transformation function to convert the result of the expression to a Boolean value, and if True executes the code snippet in the statement

Introduction to the object:Description: A class/type is a data structure used to organize data and functionality together, although JS is an object-oriented language that does not have a traditional object-oriented approach to customizing the class

Elevation: Chapter 13th EventsThe event flow describes the order in which events are received from the page. 1. Event bubbling stream: The event starts with the most specific element received and then propagates up to the less specific node

think about your work. iOS development for more than a year the blink of an eye is over, but it's not over yet, and it's just that the previous development, though not at the apex, is a successful transformation through my tireless efforts, albeit

First of all: the originalQuick tip:get URL Parameters with JavaScript function Getallurlparams (URL) {var queryString = URL? url.split ('? ') [1]: Window.location.search.slice (1); var obj = {}; if (queryString)

This article ish5eduAgency officialHTML5 Trainingtutorial, main introduction: javascript intensive tutorial--function parameters The JavaScript function parameter JavaScript function does not perform any checks on the value of the parameter

BootStrap uses the file-input plug-in to upload images, I recently wrote my own personal website and used the bootstrap framework at the front end to find a bootstrap-based Image Upload framework file-input plug-in online when uploading images, this

Use JS to display the waterfall stream effect (simple example) and js waterfall I wonder if you have found that general image display websites use waterfall stream effects, the so-called waterfall stream. That is, the images in the website will not

HTML5 canvas 9 provides an example to illustrate how to draw images, Draw Images Var image = new Image (); Image. src = "plaintext "; Image. onload = function (){} Context. drawImage (image, x, y ); Context. drawImage (image, x, y, w, h ); Context.

Detailed description of window. navigator in javascript Host object, javascriptnavigator Window. navigator is an object that reflects the information about the browser and its functions. // Check the browser version information function

Summary of daily knowledge points (1) and summary of knowledge points Summary of front-end specifications Html:1: Nested nodes should be indented with four spaces2: The attribute uses double quotation marks (eg: class = ""3: You do not need to

Ionic default Tabs template use instance, ionictabs template instance Ionic default Tabs template. Android is at the top and IOS is at the bottom. Modify the configuration in www/js/app. js, add a variable, and then modify the corresponding

About js data type judgment and array judgment, and about js data type array Preface: Yesterday's interview found that a very simple question was not answered, probably because it was too nervous and I felt dumbfounded. Later, I think we should