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i getting the user name to be entered but the first name and last name still submiiting which it not suppose to

What I have tried:

if(username == "" )
alert("please enter your username first.");
return false;

else if(username=='fname')
alert("username must not contain first name.");
return false;
else if(username=='lname'){
alert("user must not contain last name");
return false
Updated 17-May-23 17:55pm

1 solution

"==" is an absolute comparison: it requires the two strings on the left and right side of the operators to be identical.

To check if a string is anywhere inside another, use the JavaScript String includes() Method[^]
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