[Javascript advanced] exception

If the keyword Error is used for an exception, we can create an exception instance like a new common object. var err = new Error ("this is an exception"). The attribute of the exception is as follows: description: error description fileName:

Solution to the problem that tbody innerHTML cannot be assigned a value in IE6-IE9

The innerHTML of tbody in the IE6-IE9 cannot be assigned a value. The reproduction code is as follows:Copy codeThe Code is as follows: innerHTML of tbody in IE6-IE9 cannot copy bug aaa GET SET Two buttons: the first to get the innerHTML of

[2] How to use data and select elements in D3.js

If you are interested in D3.js or data visualization, welcome to www.ourd3js.com for discussion. Next I will discuss how to select elements and use data.The page now contains three lines of text with the code: Hello World 1Hello World 2Hello World 3

Use upstart to encapsulate nodejs applications as system service instances

I. Introduction to General Deployment of nodejs applications Finally, we need to deploy the nodejs application online and copy the source code to the directory through git.Copy codeThe Code is as follows:/root/deploy/movieRun the following

A simple image switching effect implemented using html + css + js

.This image switching effect is easy to implement and has good compatibility.The html page is as follows:Copy codeThe Code is as follows: Css styleCopy codeThe Code is as follows: Js scriptCopy codeThe Code is as follows:$

Use return true or false in Jquery's each to replace break or continue

Copy codeThe Code is as follows:Function methodone (){....$. Each (array, function (){If (condition true ){Return true;}});....} There is an each in a function. If a condition in the each is true, the function returns true or false.However, you

Solution that does not support trim attributes in ie 7/8

In ie 7 8 browser, if space is removed using the trim () attribute, an error is reported.Therefore, there are the following solutions to solve this problem:Currently, there are 12 methods to remove spaces in JS:Implementation 1String. prototype.

Differences between javascript single quotes and double quotes

There is no difference between single quotes and double quotes.Copy codeThe Code is as follows: ----------------- incorrect ----------------- correct Double quotation marks must be used as follows:Var str = "abc \" def \ "ghi"Double quotation marks

JQuery source code framework analysis

Each framework has a core, and all the structures are based on this core. After the structure is established, the rest is the function stacking. The core of jQuery is to match and operate elements from HTML documents. Just like a building, let's get

An html5 video control only supports the default android mp4 and 3gp formats.

Copy codeThe Code is as follows: // Due to limited js levels, don't like it or not. It's okay to check it out. video is a new control in html5. You can check it out.

Webpage json (5) --- convert the value obtained by using the serialize () method to json

Form has a serialize () method that can serialize the value of the form. However, this method provided by jquery serializes the data in a format similar to the following: A = 1 & B = 2 & c = 3 & d = 4 Jquery does not provide a method to

How to obtain Battery status using JavaScript

Since Mozilla Aurora 11, Firefox has implemented some new functions, one of which is the basic implementation of the battery Status interface. This simple interface provides information about the current battery power, whether the battery is being

JavaScript implementation and application of data structures and algorithms: Stack/recursion/Hanno (1)

Summary In this article, I will introduce the basic operations of the data structure Stack and some of its applications. We will see the application of Stack matching detection in parentheses, expression evaluation, and function call. Recursion is a

Js native appendChild bug

AppendChild is mainly used to insert a node to the last window. onloadfunction () {varul2document. getElementById (& amp; #39; ul2 & amp; #39;); varolidocument. getElementsByTagName (& amp; #39; li & amp; #39 ;); AppendChild is mainly used to append

Interaction between the js frontend and backend data-frontend and backend

The website is programmed around the database. It is centered on the data in the database and operates the data through the background, the data is then transmitted to the foreground for display (of course, the background code can be embedded in the

Ten amazing JavaScript skills

Although I have been using Javascript for development for many years, it often has some small features that surprise me. It doesn't matter how many years I 've been dealing with Javascript-it contains into little things that surprises me almost

How to Use Break and Continue in JavaScript programs

This is a js tutorial-using JavaScriptBreak and Continue. There are two statements that can be used in a loop: break and continue. JavaScriptbreak and continue statements have two special types of statements available in the loop: break and continue.

JavaScript scope chain 1: Scope chain Definition

Data in the execution context (variables, function declarations, and function parameters) are stored as attributes in the variable object. Variable Data in the execution context (variables, function declarations, and function parameters) are stored

Use JavaScript to verify the regular expression of the mobile phone number

Use JavaScript to verify the regular expression of the mobile phone number. The Code is as follows: Function checkMobile () {var phone = document. getElementById ("phone"). value; var reg0 =/^ 13 \ d {5, 9} $/; // 130--139. At least 7-bit var reg1 =

Dojo micro-template: dojo/string Module

Email: longsu2010atyeahdotnet anyone who knows about JohnResig's JavaScriptMicro-Templating knows its conciseness and the amount of code to implement. In the dojo/string module, dojo provides a very concise template replacement function substitute.

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