Question

I have the following code

function manChecks() {
    if ($("#__CS").length > 0) {
        var cols = $("#__CS").val();
        for (var i = 1; i <= 9; i++) {
            colManage(i, cols.indexOf('|' + i) != -1);
        }
    }
}

So what happens if that code is less than 0 it shouldn’t run – but it seems to be causing an issue.

Have a written this correctly or have I missed something.

Answer 1

What your code currently does:

• If #__CS does not exist in the document, do nothing (this check will not cause an error)
• If #__CS does exist, its .val() will be set to cols. This will never cause an error.
• After that, you will iterate from 1 – 9. This will not cause your code to break.
• Nine times, colManage will be called, passing a value from 1 to 9, together with an indication of whether or not |1 to |9 exists in the string cols. This call will never cause your code to break either, but something in colManage could very well cause it to break.