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VisualizaçõesHow can I change an image when the user scrolls down?
I can easily animate on scroll down png and jpg format images easily, but when I scroll down gif images, It repeatedly animated when I scroll down more.
this is the script i use
<script type="text/javascript">
$(function () {
$(window).scroll(function () {
if ($(this).scrollTop() > 10) {
$('.navbar-brand-img img').attr('src','asserts/images/innvert.gif');
}
if ($(this).scrollTop() < 49) {
$('.navbar-brand-img img').attr('src','asserts/images/expand.gif');
}
})
});
</script>
Anyone can help
I want to animate logo of gif images i provide the model website that animation used
·
Juan Pablo Isaza
1 Respostas
Responde à pergunta0
Setting the src= of an image will always restart the image if it's animated, even if it's the same src=. Your issue is that you re-set the src= (to the same value) on every scroll so it's constantly restarting.
You can store whether or not you've already set the image - a simple flag (or .data on the img) would suffice.
$(function() {
$(window).scroll(function() {
// set to true/false here based on your initial image
var invert = false;
if ($(this).scrollTop() > 10) {
if (!invert) {
$('.navbar-brand-img img').attr('src', 'asserts/images/innvert.gif');
invert = true;
}
}
if ($(this).scrollTop() < 49) {
if (invert) {
$('.navbar-brand-img img').attr('src', 'asserts/images/expand.gif');
invert = false;
}
}
})
});
Note your >10 doesn't match with <49 so may cause problems.
·
Juan Pablo Isaza
Relatório
Responde à pergunta