HTML <radio> radio Button control label usage resolution and how to set default check

Last Update:2014-11-17 Source: Internet

Author: User

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The Radio object represents a radio button in an HTML form. <input type= "Radio" in an HTML form > A Radio object is created every time it appears.

A radio button is one of a set of mutually exclusive option buttons. When a button is selected, the previously selected button becomes unchecked. When the radio button is selected or unchecked, the button triggers the onclick event handle. You can access the Radio object by traversing the elements[] array of the form, or by using document.getElementById (). collected and collated by Www.169it.com

One, radio button control syntax

1	`<` `input` `name` `=` `"Fruit"` `type` `=` `"radio"` `value` `=` `""` `/>`

Using the HTML input tag, name is a custom, type "Radio" form.

Second, radio radio button code example

1. HTML code snippet:

1 2 3 4 5 6 7 8 < formaction = ""method = "get" > 您最喜欢水果？< br/>< br/> < label >< inputname = "Fruit"type = "radio"value = ""/>苹果 </ label > < label >< inputname = "Fruit"type = "radio"value = ""/>桃子 </ label > < label >< inputname = "Fruit"type = "radio"value = ""/>香蕉 </ label > < label >< inputname = "Fruit"type = "radio"value = ""/>梨 </ label > < label >< inputname = "Fruit"type = "radio"value = ""/>其它 </ label > </ form >

2. Example code fragment two (default Check setting example):

1 2 3 < input type = "Radio" name = "Identity" value = students checked = "Checked" /> students < input type = Radio name = "Identity" value = "Teacher" /> teacher < input type = Radio name = "Identity" value = "admin" /> Admin

In the code example two, checked= "checked" means the default check setting.

3. code example three (JS Operation Radio):

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> < html > < head > < metahttp-equiv = "Content-Type"content = "text/html; charset=gbk" > < script >  </ script > < title >http://www.169it.com</ title > </ head > < body > < inputtype = "radio"id = "test11"name = "test11"value = "1"/>测试1 < inputtype = "radio"id = "test11"name = "test11"value = "2" />测试2 < inputtype = "button"value = "BTN_ByID"onclick = "getVById()"/> < inputtype = "button"value = "BTN_ByName"onclick = "getVByName()"/> </ body > < html >

Article Source: HTML <radio> radio button control label usage resolution and how to set default check

HTML <radio> radio Button control label usage resolution and how to set default check

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