JavaScript

1.: first: Get the first element2. Example(1) Source CodeFirst.html:Copy codeThe Code is as follows:: first selector Apple pears orange watermelon litchi grape bananas cantaloupe Apple pears orange watermelon litchi grape bananas

There are several ways to verify the form before submission.In Django, JavaScript can be used to verify the form data before the form is submitted to reduce the background pressure. The following describes the valid formula (every .html file is a

In this example, it is a very simple div drag. If you need it, you can add the corresponding code as needed. Welcome to shoot bricksCopy codeThe Code is as follows: div width resize Style = "width: 2px; background: # cccccc; cursor: e-resize;"> -- %

The previous blog wrote the check box. This time it wrote a single record. Sometimes, when querying, you can only select one record. If you highlight the row of the selected record, at the same time, the row's single-choice button is also selected,

The average time complexity of the algorithm is O (nlogn ). However, when the input is an sorted array or an input in almost sorted order, the time complexity is O (n ^ 2 ). To solve this problem and ensure that the average time complexity is O

JS paging control, which can be used for refreshing new pages Copy codeThe Code is as follows:Function PagerBar (recordcount, pagesize, pageindex, showpagecount ){Var NumberRegex = new RegExp (/^ \ d + $ /);This. PageIndex = 1; // page index,

Copy codeThe Code is as follows: simple drag-and-drop principle instance drag me here

Copy codeThe Code is as follows: show hide effect friend menu list New white-haired witch pass New white-haired witch pass New white-haired witch pass New white-haired witch pass New white-haired witch pass New white-haired witch pass New

Style = "ime-mode: Disabled"This sentence is more practical. To disable the input method. It saves some people the trouble of entering numbers in full angles, and the result cannot be entered to find you crying. It is also a blame for your poor

Sometimes, you need to check whether the user has modified the content of a form. You can use the following technique. If the content of a form is modified, true is returned, if the content of the form is not modified, false is returned. The Code is

Starting from the popular instance parseInt ("09") = 0.If the parseInt (number, type) function is followed by 2nd parameters, the default value is decimal.For example, parseInt ("010", 10) is the result of the 10 hexadecimal notation: 10,ParseInt ("0

Recently, a module in the project is used for real-time monitoring, and a menu bar on the left is used to display all devices. Of course, it is dynamically obtained from the database, the right side is an iframe used to display the monitoring screen.

JavaScript script files are loaded at the bottom of the page, which can effectively speed up page loading.However, the php controller is generally written as follows:Copy codeThe Code is as follows:$ This-> load-> view ($ HEADER );$ This-> load->

Copy codeThe Code is as follows: select the uploaded image. Add an image X

Eval (obj); this function executes obj as code.Example:Copy codeThe Code is as follows: Use of eval functions Var a = 3;Var B = 5;Var c = a + B;Alert (c );

The trend of browsers is to add more and more objects, such as Worker, and add new methods for old objects. The first step in how to be compatible with it is to check whether they exist or not. If not, add your own compatible code. Then the problem

The running result is as follows: Copy codeThe Code is as follows:

Copy codeThe Code is as follows: untitled document

Source code:Copy codeThe Code is as follows: Google homepage animation get started! In fact, this animation is not difficult. It is difficult to make it on that image. I don't know how it was made !!!

Copy codeThe Code is as follows: untitled document display and hide effects of div content 1. test example 2. test example 3. test example 4. test example 5. test example 6. test example 7. test example 8. test example 9. test example 0. test