Question

I’m validating a form and after validation, I want to redirect with window.location = xxx but it doesn’t work unless I put an alert call after it.

The validation works by handling the onsubmit event of the form.

function isvalid()
    {
        var txt = document.getElementById('txtTitle');
        if (txt.value == '')
        {   alert('Please enter a title'); return false;}
        else 
        {

            var sURL = "get_movies.php?title=" + txt
            window.location.href = sURL;
            //alert('');
            return true;
        }
    }

Answer 1

The form’s onsubmit expects either a true or false return value. If you return true, the form will be submitted. Since you want to manually set the window.location on a form submit, it doesn’t make sense to return true (you will then have the page fighting over a form submit and a JS redirect.

Put return false in your else block and you should be good to go.