JavaScript

Today we are going to solve some of the problems in the last drag-and-drop prototype. What are the questions below?Attach the JavaScript code of the previous period to make it easier for you to see the problem.1. Now this drag-and-drop if I move the

1. Humble FinanceThis is a very useful HTML5 data visualization tool, quite similar to the Flash tool. Based on JavaScript, the prototype and FLOTR libraries are used to display two sets of real-time data.2. D3D3 is one of the most popular

The length property can set or return the number of elements in the array.Grammar:Arrayobject.lengthThe length property of an array is always 1 larger than the subscript of the last element defined in the array. For regular arrays that have

"JavaScript" 02. Basic Grammar Learning Introduction:　　The Old Farmer thinks (the old farmer is my nickname to oneself), learns any computer programming language to begin with its grammar knowledge first. A computer program language consists

Object Propertiesdocument.title//Set document title equivalent to HTML tagsdocument.bgcolor//Set page background colorDocument.fgcolor//Set foreground (text color)Document.linkcolor//non-clicked link colordocument.alinkcolor//Activate link (focus

Let's start by looking at a closure function:function A () { var i = 0; function B () { alert (+ +i) ; } return b; } var c = A (); C (); C (); C

I learned sparse, this article only for the introduction, Welcome to the road Daniel come to treatise, greatly appreciated!Now the frameworks are modular, and even the front-end JavaScript is no exception. Each module is responsible for a certain

Today, colleagues said JS front-end for the efficiency of the high, I do not believe, because I remember that the efficiency of foreach in PHP is more efficient than for, and then I did a test, as follows: ceshiUnder Chromejquery each:60Native loop:2

Native javascript implements the Tab switch function, including javascripttab Analyze the code for individuals to obtain class name elements using native JS: Copy codeThe Code is as follows:GetByClassName: function (className, parent ){Var elem = [],

Create a table dynamically using javascript, and create a table using javascript Copy codeThe Code is as follows: Method 2: Copy codeThe Code is as follows:

Js to get browser information and page information 1. js gets browser information, including determining whether the browser is mobile or not, browser information, and android version 2. js obtains the url, domain, and title of the page.   Function

Detailed description of the Buffer module in NodeJS and nodejsbuffer I. Opening Analysis The so-called Buffer refers to the "temporary storage zone", which is a memory block that temporarily stores input and output data. The JS language only has the

Qunit of JS automated test unit testBecause the company has developed a javascript SDK that requires testing, it has been searching for a long time on the Internet and found the QUnit developed by the JQuery team, and JsUnit Based on JUnit, some of

Js + jquery supports image cropping, and jsjquery supports image cropping. Now we have a personal portrait upload function when using the personal centers of various websites. After uploading a personal photo, the user may not meet the requirements

Introduction to value type conversion in JavaScript, javascript +,-, *,/, =, And! In JavaScript ,! = During equal operation, if the value types on both sides of the operator are inconsistent with the expected type, JavaScript will convert the values

Introduction to prototype in JavaScript, and javascript prototype Inheritance in JavaScript is completed through prototype chain: each object has another object as its prototype, and the object inherits the property from this prototype ). For each

JavaScript is used to list the longest consecutive numbers in an array. Original question: For an unordered integer sequence, find the longest continuous sequence of numbers. For example: Given [100, 4,200, 1, 3, 2], The longest continuous numerical

Detailed introduction to the console. time () function in JavaScript, javascriptconsole If you need to know the code execution time during Web debugging, you can add the console in JavaScript code. time () Statement and console. timeEnd () statement

JavaScript is used to list the longest continuous numbers in an array. It is a javascript array. Original question: For an unordered integer sequence, find the longest continuous sequence of numbers. For example: Given [100, 4,200, 1, 3, 2], The

HTML5 Boilerplate, html5boilerplateRecently I saw the HTML5 Boilerplate template, and learned about it. As various CSS libraries and JS frameworks emerge one after another, it is amazing to see such a good HTML template. Write a blog and we