JavaScript

For example, in the options below, we need to include * as required. See the figure below: Did you see the webpage above? You must select one option for multiple business channels. What should I do? If none of them are selected, an error message is

JQuery provides a powerful val () method to process value-related operations.Obtain the values of a single select statement and the values of multiple select statements.Copy codeThe Code is as follows:HTML code: Single Single2 Multiple Multiple2

1. Embed php code in javascriptIf javascript is contained in a js file, you can directly write php code in the js file, except that the js file contains a php extension, for example:Copy codeThe Code is as follows:Ii. default values of javascript

We all know that there is no way to directly implement method overloading in js, because if multiple methods with the same name but different number of parameters are defined in js, only the last method can actually be called, other methods are

Procedure:Method 1: In the pop-up window, add the code onblur = "self. focus ()":Method 2: Use the showModalDialog method to create a mode dialog box. Its parameter descriptions are shown in Table 1.5.2. open the mode window Method 3: Use the

In most browsers, when an Event processor is triggered, the class instance named Event is passed into the processor as the first parameter. However, ie, which has been dominant, acts in its own way and saves the Event instance to a global attribute

Currently, if javascript is used to write the code copied to the clipboard, it is generally not compatible with browsers. So we can use flash to simulate a layer and then copy it to make it suitable for all browsers ~Download a swf file and a js

The following is a simple code implementation for returning the top effect, with a comment.1. The simplest static return to the top of the page. Click to jump directly to the top of the page. This function is usually used to return to the top of the

Document. styleSheets stores a set of all CSS rules on the current page. You can traverse all the selectors defined in the page and access the selectorText attribute to obtain the matching rules of the selector. Then, pass the rule to document.

When I was working on a project, I felt that the pop-up layer was doing quite well, but there was a problem with the code structure. I used it this time and restructured it into the jQuery plug-in form, and added the reLoad function. The Code is as

Validation is a jQuery plug-in. It provides methods that greatly simplify the work of verifying forms. This function is also common enough. Rules is also simple enough and easy to use. For example, verify the registry form with validation.First,

The following html is used as an example.Copy codeThe Code is as follows: Baidu 1. Obtain and set the element features through the attributes of the HTMLElement type (object)Copy codeThe Code is as follows:Var div = document. getElementById ("myDiv

If it is bound to a window object, it is triggered after all content is loaded, including the window, frame, object, and image. If it is bound to an element, it is triggered after the content of the element is loaded.Note:: The load handler is

After the introduction of event-driven in asp.net, it is easy to solve the problem that multiple buttons trigger different events on a single page, this avoids the trouble of requiring multiple forms in asp or controlling them through js scripts.Asp.

JQuery is a well-deserved open-source JS framework. It occupies a large development market with its small and practical capabilities. Another advantage of jQuery is its rich plug-ins, these plug-ins can help you simplify many development processes.

Copy codeThe Code is as follows:

During JS development, we encapsulate complicated third-party plug-ins and publish a very simple method interface. This is a common method for development. In JS, our method parameters usually use JQ's $. extend extension method to implementCopy

Because php configuration generally uses data, which is exactly the same as that of objects in js, you can do this:Copy codeThe Code is as follows: Copy codeThe Code is as follows:Var $ strings = {};$ Strings ['hide '] = 'hide ';$ Strings ['show'] =

JavaScript compatibility has long been a major problem for Web developers. Many developers suffer day and night due to the differences between formal specifications, fact standards, and various implementations. To this end, we mainly summarize the

The Jquery version is updated quickly, and the code writing has changed a lot. The following Jquery Code applies to query1.4 and later versions.Radio1. To obtain the selected value, you can use either of the following methods:$ ('Input: radio: