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How To Enable Or Disable Validation Control Using Javascript

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        Here is the solution to enable/disable validation using javascript
Suppose i have dropdown which contain list of Asian countries and Other when user are selecting Other than only txtOtherCity is enbled else disable at that i disable required field validation for Other city (rfvOtherCity) 

ValidatorContronName:This is ClientID of the Validation control.
Boolean:true(Enable) or false(Disable)
ValidatorEnable(document.getElementById('<%=rfvOtherCity.ClientID%>'), false);

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