验证动态添加控件的文本框,复选框,下拉列表 [英] validate textbox,checkbox,dropdownlist for dynamically added controls
问题描述
如何验证文本框,复选框,下拉列表,为按钮点击动态添加控件
使用onblur ..有任何方式,所以我实现了它。 br />
示例:
1>如果文本框,复选框,下拉列表不应为空 - 提供错误消息msg
2>如果要选中复选框并且dropdownlist值应该选择值 - 如果没有错误消息。
3>如果要选中复选框,则dropdownlist应该选择索引,文本框无法空白
在我的gridview中有超过1oo行所以有很多可能性发生123,321,12,13,31 .....
这就是为什么我想实现验证onblur,所以无论条件变为false,它都会提示错误消息。 。
请帮帮我怎样才能实现...
谢谢
how to validate textbox,checkbox,dropdownlist for dynmically added controls on button click
using onblur..is there any way, so that i achieve it.
Example:
1>If textbox,checkbox,dropdownlist should not empty --provide error msg
2>If checkbox should be checked and dropdownlist values should have selected value--if not error msg.
3>If checkbox should be checked ,dropdownlist should have selected index,textbox could not blank
In my gridview there are more than 1oo rows so there many possibility can occur 123,321,12,13,31 ....
So thats why i want to implement validation onblur,so wherever condition get false it will prompt with error msg..
Please help me how can i achieve it...
Thanks
推荐答案
试试这个演示.. :)
Javascript
try this demo.. :)
Javascript
function validateControl(value)
{
if (value == "")
{
alert("This field can not be blank..!!");
}
}
HTML
HTML
<input type="text" id="txtUserName" onblur="validateControl(this.value)"/ >
将onblur
事件附加到每个控件,同时它们是动态创建的。
然后在onblur
JavaScript 事件,fe控制和验证。
Attachonblur
event to every control, while they are created dynamically.
Then in thatonblur
JavaScript event, fetch the control and validate.
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