Question

I want to use a php boolean variable inside a jquery if-statement. This is my code:

if(<?php echo $show_login_error ?>)
    $(".login_error").show();

.login_error is a class for a span element. If the $show_login_error variable is true, then I want to show the span, if not then hide it. By default the span is hidden and $show_login_error is false. Unforunately, the span shows regardless of the variable value so I’m guessing my code is wrong. What should I change to make it right? Thanks

Answer 1

First, make sure .login_error is hidden by default (display:none).

Then, try

if(<?php echo (int)$show_login_error ?>)
    $(".login_error").show();

just to make sure it prints 0 or 1 (because echo false doesn’t print a single character)

echo false;      //prints nothing
echo true;       //prints '1'
echo (int)false; //prints '0'
echo (int)true;  //prints '1'

EDIT

Other solutions provided below will work too! 😉