JavaScript

ObjectiveThe second chapter mainly explains the various variables scope, through this chapter's study, has contacted many things which had not been touched before, such as the eval which does not use frequently, the name function expression, with

Original link: What's{} + {} in JavaScript?Recently, Gary Bernhardt mentioned some interesting javascript tricks in a flash speech called ' Wat '. When you add an object and an object or an array, you get unexpected results. These results will be

Original address: http://www.cnblogs.com/dojo-lzz/p/4340897.htmlResolve callback functions nested too deep, parallel logic must be executed serially, a promise represents the end result of an asynchronous operation, the main way to interact with

Shortly before the interview, I met a question like, " write a cache function that looks up records based on the ID field, and if checked before, returns the object that was previously looked up without having to look for it again ." Due to the

Transferred from: http://www.cnblogs.com/shouce/p/5488101.htmlfirst, the factory modelfunctionPerson (name,age) {varp=NewObject (); P.name=name; P.age=Age ; P.showmessage=function() {Console.log ("Name:" + This. name+ "Age:" + This. Age); }

1.Error objectsRepresents an error that is created and thrown when an error occurs in the code run.Create Error:New Error ([Message],[filename],[linenumber])Error type: Evalerror errors related to eval Internalerror JavaScript engine

Today, when we changed the code, I found that many loops of code were written in the for (var i-in data), and I usually use the for (Var i=0;iJust looked at, the original two are different, can not be equated with the use.We see a () will pop up

Introduction to the website boot page and website boot page The foreign trade enterprise station is to go out of the door, buy a domain name, buy a space, please design the company, please this please, all efforts are to bring orders to the company

The custom upload button (hides the file under the button), inputbutton define the input type = "file" style

CSS selector and css3 Selector 1. the selector has the following types: 1. ID selector # aaaa {} 2. class selector. aaaa {} 3. Attribute Selector Simple: h1 [attribute name] {} Specific: h1 [attribute name = ""] {} Part 1: h1 [attribute name ~ = ""]

A deep understanding of floating point numbers in JavaScript and a deep understanding of javascript Javascript has only one numeric data type. js classifies it as a number, whether it is an integer or a floating point number. Typeof 17; //

How to determine whether a Javascript Object exists in a simple example, javascript Object The Javascript language is not strictly designed, and errors may occur in many places when you are not careful. For example, consider the following situations.

AngularJs Case Study on solving cross-origin problems (simple method), angularjs First, let's make some preparations. Otherwise, you will understand what I mean and what others will not understand. Even if someone else understands it, then someone

Bootstrap component (1) menu, bootstrap component menu Glyphicons font icon Base class. glyphicon {position/top/display/font-family /} Specific Class {content} -- represented on pseudo elements Usage tips: a. base class + specific class B. Add a

Jquery ajax Local Loading Method (implementation code), jqueryajax There are many ajax loading methods in jquery, unlike the previous JavaScript ajax method. Next we will introduce the jquery ajax Method for local loading, for more information, see.

Bootstrap3 creates image carousel effects, Let's take a look at the Bootstrap image carousel effect: The above is the effect shared for everyone, but this is the homepage of Netease cloud music. In this way, we can remember that android added this

Jquery: Click the corresponding row in the table to change color. [instance Code], jquery table For a table, to make it easier to distinguish the selected items, you need to add a highlighted item for the selected item. At the same time, you also

JQuery easily implements the example code of table row-changing and click-row-changing. JQuery allows you to easily change the color of rows in a table. Use jquery to set Table Styles The above jQuery example code

JQuery code implementation dialog box top-right menu with closed ×, jquery dialog box First, we will show you the details as follows. If you think it is good, please refer to the implementation code: The Code is as follows: close X-what to ask

Js achieves pure front-end image preview and js achieves pure image Preview Image Upload is a common function, and image preview is an essential sub-function in the upload function. Before that, I subscribe to the onchange event of the input [type =