<script> function check_empty() { var str=true; var user_name = /^[A-z]+$/; var email_val = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/; var phnor =/^[2-9]\d{2}-\d{3}-\d{4}$/; var pwd = /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[$@$!%*?&])[A-Za-z\d$@$!%*?&]{8,}/; if (!document.form.uname.value.match(user_name)) { document.getElementById('msg1').innerHTML="*Please enter a username*"; str=false; } else if (document.form.uname.value != "") { document.getElementById('msg1').innerHTML=""; str=false; } if (!document.form.email.value.match(email_val)) { document.getElementById("msg3").innerHTML="Please Enter Valid Email ID"; str=false; } else if (document.form.email.value != "") { document.getElementById("msg3").innerHTML=""; str=false; }
IF
ELSE
str=false
you are also missing the complete If else structure
If () {....} else if() {...} else //you have missed this Else {...}
var
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