Question

Is there a function or statement I can use to check for true/false that I could be getting from php, or html, or some source that would provide a true or false value that javascript would not understand as boolean. So I could check for the string true or boolean true or a 1 value (which php returns for true, I think..)

So like:

    var trueVal = true;
    if ( trueVal == true || trueVal === true || trueVal == "true" || trueVal == "TRUE" || trueVal == "1" || trueVal == 1 ) {

    //

    }

Does this make sense? Is there a much easier way to do this?

Thanks!

Answer 1

Well if you can make sure the true is passed correctly, then it could be a lot easier:

if( trueVal)

The only time this would be a problem is if you had the string "false" or "0", but that can be fixed:

if( trueVal && !trueVal.toString().match(/^(false|0)$/i))