Console.log not working at all

Question

A bunch of code isn't working and I'm trying to identify where the problem lies but console.log() isn't logging any results in Chrome Dev tools, am I doing it correctly?

$(window).scroll(function() {
       $('section').each(function(){
            var id='#'+$(this).attr('id'),
                off=$(id).offset().top,
                hei=$(id).height(),
                winscroll=$(window).scrollTop(),
                dif=hei+off-($(window).height());

            if (winscroll >= off && winscroll<=dif) {
                console.log('first broken');
                $(id+' .sticky').removeClass('abs').addClass('fix');
            } else if (winscroll > dif){
                console.log('second broken');
                $(id+' .sticky').removeClass('fix').addClass('abs');
            } else {
                console.log('third broken');
                $(id+' .sticky').removeClass('fix abs');
            }   });
        });

EDIT FULL CODE ADDED

$(document).ready(function() {

    // If a browser supports 3D transforms use the fancy menu if it doesn't, use standard accordion menu instead
    if($('html').hasClass('csstransforms3d')){

        $( "#mp-menu" ).removeClass( "snap-drawers" ).addClass( "mp-menu" );

        $('nav ul li ul').css('border-bottom','1px solid rgba(255, 255, 255, .05)');
        $('nav ul li ul').css('background','none');

        // Insert elements where necessary to create the right structure
        $('#mp-menu').wrapInner('<div class="mp-level" />');
        $('#mp-menu').find('li > ul').wrap('<div class="mp-level" />');

        $("#mp-menu ul li .mp-level").prepend(function () {
            return '<span class="menu-title">' + $(this).prev().text() + '</span> <a class="ico mp-back" href="#">Back</a>';
        });

        // load in necessary JS files
        $.getScript('http://176.32.230.2/baodev.com/cjo/wp-content/themes/CJO/js/multi-level-menu.js');

    } else {

        // load in necessary JS files
        $.getScript( "http://176.32.230.2/baodev.com/cjo/wp-content/themes/CJO/js/jquery.navgoco.min.js", function() {
            $("#demo1").navgoco({accordion: true});
        });

        $.getScript( "http://176.32.230.2/baodev.com/cjo/wp-content/themes/CJO/js/snap.min.js", function() {

            // Snapper settings     
            var snapper = new Snap({
              element: document.getElementById('scroller'),
              disable: 'right',
              maxPosition: 291
            });

            var addEvent = function addEvent(element, eventName, func) {
                if (element.addEventListener) {
                return element.addEventListener(eventName, func, false);
              } else if (element.attachEvent) {
                  return element.attachEvent("on" + eventName, func);
              }
            };

            // Toggle button
            addEvent(document.getElementById('trigger'), 'click', function(){
                if( snapper.state().state=="left" ){
                    snapper.close();
                    $( ".menu-trigger" ).removeClass( "active" );
                } else {
                    snapper.open('left');
                    $( ".menu-trigger" ).addClass( "active" );
                }
            });

            addEvent(document.getElementById('scroller'), 'click', function(){
                if( snapper.state().state=="left" ){
                    $( ".menu-trigger" ).removeClass( "active" );
                }
            });

            /* Prevent Safari opening links when viewing as a Mobile App */
            (function (a, b, c) {
              if(c in b && b[c]) {
                  var d, e = a.location,
                      f = /^(a|html)$/i;
                  a.addEventListener("click", function (a) {
                      d = a.target;
                      while(!f.test(d.nodeName)) d = d.parentNode;
                      "href" in d && (d.href.indexOf("http") || ~d.href.indexOf(e.host)) && (a.preventDefault(), e.href = d.href)
                  }, !1)
              }
            })(document, window.navigator, "standalone");

        });

    } // end if

    fitHeight();

    $(window).scroll(function() {
        $('section').each(function(){
            var id='#'+$(this).attr('id'),
                off=$(id).offset().top,
                hei=$(id).height(),
                winscroll=$(window).scrollTop(),
                dif=hei+off-($(window).height());

           console.log('msj');

            if (winscroll >= off && winscroll<=dif) {
                $(id+' .sticky').removeClass('abs').addClass('fix');
            } else if (winscroll > dif){
                $(id+' .sticky').removeClass('fix').addClass('abs');
            } else {
                $(id+' .sticky').removeClass('fix abs');
            }
        });
     });

});

// Trigger FitHeight on browser resize
$(window).resize(fitHeight);

EDIT

Some bits of the full code (above) refer to other JS files and code returns no errors when run with these files present. After troubleshooting I see the console message before the scroll function but I do not see the console message within the scroll function.

fitHeight();

    console.log('About to bind scroll effects'); // I SEE THIS MESSAGE

    $(window).scroll(function() {

        console.log("scroll bound, now loop through sections"); //BUT NOT THIS ONE

        $('section').each(function(){

Answer 1

In my case, all console messages were not showing because I had left a string in the "filter" textbox.

Remove the filter it by clicking the X as shown:

Answer 2

Consider a more pragmatic approach to the question of "doing it correctly".

console.log("about to bind scroll fx");

$(window).scroll(function() {

       console.log("scroll bound, loop through div's");

       $('div').each(function(){

If both of those logs output correctly, then its likely the problem exists in your var declaration. To debug that, consider breaking it out into several lines:

var id='#'+$(this).attr('id');

console.log(id);

var off=$(id).offset().top;
var hei=$(id).height();
var winscroll=$(window).scrollTop();
var dif=hei+off-($(window).height());

By doing this, at least during debugging, you may find that the var id is undefined, causing errors throughout the rest of the code. Is it possible some of your div tags do not have id's?

Answer 3

In my case I was developing a Polymer WebComponent, which is included using <link rel="import"> into the main HTML document. Turns out that the WebComponent HTML file was being cached for some reason, even though I had changed it since the cached version.

To solve it I opened the Developer Console (in Chrome), right clicked on the reload arrow next to the URL bar and selected "Empty cache and hard reload" - problem solved.

Answer 4

You may have used the filter function in the console which will hide anything that doesn't match your query. Remove the query and your messages will display.

Answer 5

Just you need to select right option to show the log messages from the option provided in left side under the console tab. You can refer the screen shot.

Answer 6

Now in modern browsers, console.log() can be used by pressing F12 key. The picture will be helpful to understand the concept clearly.