Why do I have to add var to define the I variable in the js for loop?

For example.Copy codeThe Code is as follows:For (I = 0; I Alert (I );} However, this is really not a good habit. Next I will explain why var must be added to the Js for loop, otherwise it will bring you annoying and difficult to query bugs from time

Two JS-type codes for simple menu highlighting

I remember that when I wrote a static page in that year, different styles were added to each page for highlighting. highlighted display I think it is quite common for the web Front-end. This is exactly what I want to use. I specially sorted out the

Cnblogs TagCloud jquery-based implementation code

1. Go to the "Management> Configuration" panel.2. In the "customize page style through CSS" text box, add:Copy codeThe Code is as follows:/*********** Tag cloud css ****************/# TagCloud {Text-align: center;Overflow: hidden;}# TagCloud

How to solve String constant errors before js ends

1. When JAVASCRIPT is referenced, the character languages used are inconsistent.For example, . xxx. js file is used inside the GB2312 format, calling outside is used UTF-8, so some special characters inside the file because of inconsistent formats,

Js practical uninterruptible scrolling effect (good compatibility)

The following describes a method. Basically, the structure and behavior are separated, and only one connection is required.It is easy to use, and the same js Code can achieve the effects of multiple scrolling graphs on this page without mutual

Implementation Code of the event listener constructed by the traditional javascript event model

The Code is as follows:Copy codeThe Code is as follows:Var br = {};Br. eventRouter = {};Br. eventRouter. addListen = function (el, eventType, func ){If (! El. eventObjs ){El. eventObjs = {};}If (! El. eventObjs [eventType]) {El. eventObjs [eventType]

ASP Filter Array repeated data functions (enhanced Edition)

Function Code:Copy codeThe Code is as follows:'Filtering array repeated function name: array_no (cxstr1, cxstr2, cxstr3)'Cxstr1: any string, automatically recognized'Cxstr2: delimiter in cxstr1.'Cxstr3: string at a certain position in the extraction

Use jquery to operate the code of the select drop-down list box

Example:Copy codeThe Code is as follows: JOHN Li Si // Obtain the selected option value$ ('# SltList'). val ()// Obtain the text of the selected item$ ('# SltList option [@ selected]'). text (); // obtain the currently selected option. text is text,

An alternative perspective of JQuery dynamic extension objects

For example, there is an employee object,Copy codeThe Code is as follows:Function employee (){This. e_id = 0;This. e_name = "";} Now we need to dynamically add the "age" attribute and "toString ()" method for it,Copy codeThe Code is as follows:Var

The first small example of jquery rotation display

Shows the effect:After reading the example, I wrote it myself (just give myself an encouragement !)Jquery Copy codeThe Code is as follows:$ (Document). ready (function (){Var h3 = $ (". accordion h3 ");$ (". Accordion h3: eq (0)"). addClass ("active"

Javascript function restriction code

Function:Copy codeThe Code is as follows:Function throttle (fn, MS ){Var last = (new Date (). getTime ();Return (function (){Var now = (new Date (). getTime ();If (now-last> MS ){Last = now;Fn. apply (this, arguments );}});} Fn: Input

Asp.net + js implements code for parsing csv files without refreshing new uploads

Some time ago, I used it in my work. I pasted the code and only kept the relevant code. I found that there were very few codes.Upload page html/jsCopy codeThe Code is as follows:   Process File Upload c #Copy codeThe Code is as follows:If (context.

Use jQuery to pass complex json data to asp.net Mvc-ModelBinder

When jQuery's ajax method is called, jQuery will serialize the parameter data based on the post or get protocol;If the submitted data uses complex json data, for example:{UserId: 32323, userName: {firstName: "Li", lastName: ""}}The server cannot

Javascript local editing implementation code

So with this: untitled document name progresstudy age 22 occupation Student [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]This method is written in a way similar to

Validation of JQuery extension Validate-6 radio, checkbox, and select

The effect is as follows: The solution to this problem is to specify the error information to a specific location. The parameters of the validate () method can be customized. The sample code is as follows:Copy codeThe Code is as follows: Gender

Json is more user-friendly and object-oriented than string data.

Previous programs:Copy codeThe Code is as follows:ViewData ["msg"] = "{result: true, FileName: \" "+ new FileInfo (Request. Files [0]. FileName). Name +"\", FileUrl: \ "" + fileurl. Replace ("\" "," ") + "\"}"; The restructured program:Copy codeThe

Code for binding event processing functions to elements dynamically added by jQuery

I used to manually bind the event handler when I added it. However, this function has been added to the new jquery version. We don't need to worry about it anymore.Reference: http://api.jquery.com/live/Previously, we defined events. For example, we

Code for replacing table content and displaying progress bars Based on jQuery

Http://jialiren.sinaapp.com/jdt/:The Html code is as follows:Copy codeThe Code is as follows: progress bar NO. progress bar progress remarks Other 1 20 20 the progress is too slow Work 1 2 30 30 fuel Task 2 3 80

Another javascript quiz (code set)

You can test your knowledge in this area.After the question is answered, I will refer to the original blog post and comment on the question analysis, and everyone is competing.The quiz:1:1 & 32:1 & "foo" | 03:1 | "foo" & 04:(1, 2, 3)5:X = {shift: [].

TreeView usage (with Code) (asp.net)

Front-end codeCopy codeThe Code is as follows: Background code:Copy codeThe Code is as follows:Private void BindGrid (){DataTable mytable = menuTableBll. GetAllList (). Tables [0]; // obtain dataCreateTree (mytable, TreeView1.Nodes, "0 ");}Private

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