getelementsbytagname input

1. Get the dropdownlist Control Value Function getdllvalue (ID ){VaR r = Document. getelementbyid (ID );For (VAR I = 0; I If (R [I]. Selected ){Return R [I]. text;}}} PS: ID is the Control ID, which must be enclosed by quotation marks. VaR text =

Asp.net does not have the MessageBox control, although it can be inserted into the MessageBox in winform, but it is generally not advocate, so it can only be implemented with flexibility. There are mainly the following methods: 1. directly use the

Please visit and download all resources and source code http://www.cckan.net on my blog   Everyone has seen this effect. How can I introduce him to my website? Let's analyze it together. You can easily obtain the keyword by using the "development

DOM: The full name of Dom is Document Object Model, which is the Document Object Model. Dom is the W3C standard. Dom defines the criteria for accessing HTML and XML documents: "The W3C Document Object Model (DOM) is an interface neutral to the

Users of the current development project are used to entering data with a keypad, such as entering 1, replacing it with "++", inputting 2, and replacing it with "AAA, And use enter to wrap the line. In order to meet these user needs, I specially

Html5 supports placeholder native. For unsupported browsers (ie), it can be simulated using js. Js Code Copy codeThe Code is as follows: (function (){ // Determine whether placeholder is supported Function isPlaceholer (){ Var input = document.

Preface: There are many application permission management functions in various aspects for powerful back-end website management. Taking the internal management system of the company as an example, administrators can grant different permissions to

Before deleting a user's operation record, a prompt is sent to the user to confirm whether to delete the record. In general, it is no problem to delete a record. However, you can select multiple records if you do not select a record. If you click

The project uses real paging. After you click the top or bottom page button each time, you can call the background method query again to refresh the page. So checkbox is false. For example, in codoy music, the selected songs on the top and bottom

Known bugs: In Ubuntu, The onkeyup event becomes invalid. For details, see the bug of onkeyup/onkeydown invalidation for Chinese Input in Ubuntu. View DEMO: click here to view DEMO Core code: Copy codeThe Code is as follows: // The native JavaScript

Document directory I. Introduction to script Functions Ii. install and use scripts Iii. Related downloads Iv. Script Preview 5. Notes I. Introduction to script Functions Under normal circumstances, it is not easy for you to quickly record

This article mainly introduces how to achieve full checkbox selection, deselection, and deselection in js. It analyzes the Implementation ideas and the implementation process of the corresponding html and js Code in the form of examples, it is of

Placeholder is another new attribute of html5. when this attribute is set in input or textarea, the content of this value will be displayed as a gray prompt in the text box. When the text box gets the focus, the prompt text disappears. In the past,

This article mainly introduces the relevant information about how to use javascript to achieve the same sum of values of the nine squares. For more information about how to use javascript to implement the nine squares, see the examples in this

This article mainly introduces the implementation method of the js tab. The example analyzes the implementation idea of the js tab and the html + css layout and js function skills, which are very useful, for more information about how to implement

In the blank area of javascript verification, my php has a page. if you want to use js to control the number of input items, a prompt will appear. how can this problem be solved? I tried the code I gave you online, but it was not very successful.

This article mainly introduces how to implement JavaScript to receive the value of a form and put the value behind the form action. it involves techniques related to JavaScript dynamic operations on strings and form elements, and has some reference

what is DOM? 1. IntroductionThe Document Object model, or DOM, is the standard programming interface recommended by the Organization for the processing of extensible flag languages. The Document Object model dates back to the late 1990 's "browser

CopyCodeThe Code is as follows :/** * @ Author georgewing */ Function preparecheckbox (){ Document. getelementbyid ("Submit"). onclick = function (){ Selectedcheckbox (4 ); } } Function selectedcheckbox (x ){ VaR oinput = Document.

The following uses case type = "text" as an example: CopyCodeThe Code is as follows: By calling the refresh method of JSMethod 1Copy codeThe Code is as follows: function refresh (){VaR v = Document. Forms [0]. elements;For (VAR I = 0; I