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JavaScript

Posted by Craig Watson
Craig Watson
Courses Plus Student 27,126 Points

Function only triggers on refresh ??

Hi everyone!!

This function works but i have to scroll down the page and refresh to see the affects and vice versa ...

//Nav color change on scroll 
var $scrollHeight = $(window).scrollTop();

$(function (navColorToggle) {
    if ($scrollHeight > 80 ) {
        $(".navbar").addClass("scrollNav");
    }
});

Please can somebody explain why / am i missing a line of code to call the function or have i muddled this up in a spectacular way .. lol

Craig

1 Answer

Robert Richey
PLUS
Robert Richey
Courses Plus Student 16,352 Points
Robert Richey
Robert Richey
Courses Plus Student 16,352 Points

Hi Craig,

I'm not sure I understand the problem you're trying to solve, but here's what I cooked up. Perhaps this can help point you in the right direction.

$(function() {
  // avoiding prefixing with $, because this will just hold a numeric value, not a jQuery object
  var scrollHeight;

  $(window).on('mousewheel', function() {
    scrollHeight = $(this).scrollTop();
    console.log("That's how we scroll. " + scrollHeight);

    if (scrollHeight > 80) {
      $(".navbar").addClass("scrollNav");
    } else {
      $(".navbar").removeClass("scrollNav");
    }
  });
});

Cheers