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JavaScript

Posted by John Weland
John Weland
42,478 Points

variables not getting set in document.ready

This is really odd. If I write my javascript in a $(document).ready() function my var $okRow = come back undefined in the console

but if I simple remove the document ready wrapper my var gets set.

does not work

$(document).ready(function(){
   var $okRow = $('.status-column:contains("OK")').parent();
    if ($('#show-important').prop("checked")) {
        $okRow.css("display", "none");
    } else {
        $okRow.css("display", "table-row");
    }

    $('input[name="group1[]"]').on("click", function() {
        if ($('#show-important').prop("checked")) {
            $okRow.css("display", "none");
        } else {
            $okRow.css("display", "table-row");
        }        
    });
});

works

var $okRow = $('.status-column:contains("OK")').parent();
    if ($('#show-important').prop("checked")) {
        $okRow.css("display", "none");
    } else {
        $okRow.css("display", "table-row");
    }

    $('input[name="group1[]"]').on("click", function() {
        if ($('#show-important').prop("checked")) {
            $okRow.css("display", "none");
        } else {
            $okRow.css("display", "table-row");
        }        
    });

2 Answers

Jason Anello
PLUS
Jason Anello
Courses Plus Student 94,610 Points
Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hi John,

When you have it inside a function then the variable is local to that function and not available in the global scope.

When you take it out then all of that code is global and accessible from the console.

If you need to check your $okRow variable for debugging purposes then this stackoverflow link has some information on setting a breakpoint in the debugger. http://stackoverflow.com/questions/13766371/console-access-to-javascript-variables-local-to-the-document-ready-function

This is so that you can halt execution of the function and then you should be able to access that variable from the console.

David Tonge
PLUS
David Tonge
Courses Plus Student 45,640 Points
David Tonge
David Tonge
Courses Plus Student 45,640 Points

You're using this within a HTML page?