Why we are using onblur in javascript validation

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How to use onblur event in javascript validation

Posted 11-Dec-12 22:54pm

venkatgopal.mandada

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choudhary.sumit 12-Dec-12 4:59am

which one is question why or how??

Raman Thakur 12-Dec-12 5:04am

when some control lost focus and you want to call any function on lost focus.
for example when textbox lost focus and I want to implement validation so we can use that.

2 solutions

Solution 1

Answer to the title - I basically use it for validations of textboxes using javascript. But I don't have any idea why you are using it unless you tell me so.

Answer to the post body - http://www.w3schools.com/jsref/event_onblur.asp

Posted 11-Dec-12 23:24pm

bbirajdar

Updated 11-Dec-12 23:37pm

v2

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Dee_Bee · Accepted Answer · 2012-12-12T00:15:00

The onblur event occurs when an object loses focus.

Onblur is most often used with form validation code (e.g. when the user leaves a form field).

Write a java script function and call that function as shown below :

txtCreditLimit.Attributes.Add("onBlur", "javascript:return fnMyFunctionBlur()");

Here, txtCreditLimit is your control id and fnMyFunctionBlur() is your java script function.

(Or)

<input type="text" onblur="fnMyFunctionBlur()">