JavaScript

Reprint Address: http://www.ruanyifeng.com/blog/2012/10/javascript_module.htmlNanyiDate: October 26, 2012As Web sites become "Internet Applications", JavaScript code embedded in Web pages is becoming larger and more complex.Web pages are becoming

var a = 5;var B = 15;var min = Math.min (A, b);var Max =math.max (A, b);For loop greatest common divisor---(least common multiple = a * b/greatest common divisor)for (var i = min; i > 0; i--) {If (a% i = = 0 && b% i = = 0) {Console.log

A. What is JavaScript? scripting language for Web interaction effects. Effect two. BOM objects enable JavaScript and the browser to talk. The main operation is using the Window object. History object: Historical, can be realized forward backwards

There's a lot of confusion about the relationship in JavaScript. The scope chain is a one-way chain relationship, which is simple and clear;the invocation relationship of this mechanism is slightly more complex, and the archetype is the triangular

First: Variable declarationThe first thing to do when using a variable with JavaScript is to declare the variable, and the keyword for the variable declaration is var.Example:var i;var sum;You can also declare multiple variables:var i,sum;You can

character classSuppose we want to find a number in the string. Not the specified number, but any number, for example: Find "1" in "Only 1", and look for "5" in "Give me a 5".Substring matching can be used in loops to find all the numbers in 0-9.

1190000000684654What?PromiseIs CommonJS one of the specifications, the own,,,, and resolve reject done fail then so on, can help us control the flow of code, avoid multi-layered functions of nesting. Today, Async is becoming more and more important

First, the Math objectMath object: JS provides some of the math-related use methodsMath.ceil () rounding up Math.floor () down roundingMath.Round () rounding Math.random () generates a random number from 0 to 1, which can be equal to 0 and

1, Case one: Add nodes at the end the first step: get to the UL tag Step two: Create the Li label document.createelement ("label name") Method Step three: Create a text Document.createtextn Ode ("Text content"); Fourth step: Add text below Li

xDirectory [1] compilation [2] execution [3] query [4] nesting [5] exception [6] in front of the principleJavaScript has a well-designed set of rules to store variables, which can then be easily found, a set of rules called scopes. The scope seems

JavaScript is a scripting languageJavaScript is a lightweight programming language.JavaScript is a programmatic code that can be inserted into an HTML page.When JavaScript is inserted into an HTML page, it can be performed by all modern

Css shows the elements in the center and css elements in the center Html file: To center the child element horizontally and vertically within the parent Element Css file: . Parentelement { Width: 200px; Height: 200px;

Js uses the cookie-based method to record the guest name, And jscookie records the guest name This example describes how to record the name of a guest in js Based on cookies. We will share this with you for your reference. The details are as follows:

JQuery Select drop-down box operation summary (recommended), jquery drop-down box JQuery gets the Select element and selects the Text and Value: 1. $ ("# select_id"). change (function () {// code...}); // Add an event for Select, triggered when one

Code for the Select drop-down box fuzzy query function and the drop-down box fuzzy query The select drop-down list box supports the fuzzy search input function. The design is very user-friendly. The following small series will share with you the key

BootStrap additional navigation component and bootstrap navigation component What is Bootstrap? Bootstrap is a front-end framework used to quickly develop Web applications and websites. Bootstrap is based on HTML, CSS, and

Fully understand the error handling mechanism in javascript and fully understand javascript Previous Error handling is critical to web application development. errors that may occur cannot be predicted in advance, and recovery policies cannot be

How to optimize the WEB Front-end and improve the WEB Front-end performance For front-end development engineers, the importance of front-end performance optimization is self-evident. Most people know 23 optimization rules of YSLOW. In my

JQuery components are based on Bootstrap DropDownList (full version) and jquerydropdownlist In the previous document, the DropDownList JQuery plug-in created based on the Bootstrap drop-down menu has implemented the DropDownList JQuery component,

Introduction to jQuery's method for obtaining attr () and prop () attribute values, jqueryattr When you use the drop-down menu in the project today, use the juery operation to set the default value of 2 after the page is loaded. The first