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Jquery




var checkonlydecimalregex = /^(?:\d+|\d*\.\d+)$/;
var checkForPercentage = /^\d{1,2}\.\d{1,2}$|^\d{1,3}$/;
var name_regex = /^[a-zA-Z]+$/;
var email_regex = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/; 

if(!checkForPercentage.test(valueof textbox))
{
    alert("Enter only % value");
}
                                    

< First Regular Expression in php >



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