angular scroll event on div chang width

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showing results for - "angular scroll event on div chang width"

31 Jan 2020

1<body style="overflow: scroll; height: 1000px;" onload="scrollDetect()">
2    <div class="firstdiv" style="border:1px solid black; margin: 0 auto; width: 200px;height: 200px;">
3    </div>
4
5    <script>
6        function scrollDetect() {
7            let div = document.querySelector('.firstdiv')
8            var lastScroll = 0;
9            window.onscroll = function () {
10                let currentScroll = document.documentElement.scrollTop; // Get Current Scroll Value
11                if (currentScroll > 0 && lastScroll <= currentScroll) {
12                    lastScroll = currentScroll;
13                    div.style.width = '50%'
14                    div.style.height = "50%";
15                    div.style.background = "red";
16                    div.style.position = "relative";
17                    div.style.top = "0";
18                    div.style.left = "0";
19                } else {
20                    lastScroll = currentScroll;
21                    div.style.width = '200px'
22                    div.style.height = '200px'
23                }
24            };
25        }
26    </script>
27</body>
28

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