Fade in background image with jQuery

2019-01-29 07:16发布

This is the first time I am using jQuery. I am loading a large background image and when it is loaded I am fading it in over three seconds. This script works on Firefox and Chrome but not in IE (of course!). Is there any fail safe way of making it magically work in IE and is there some prettier way of writing it?

<div class="bgImage" />

$(document).ready(function () {
  // add bg image and fade
  var _image = new Image();
  _image.id = 'newImageId';
  _image.src = "./css/background.jpg";

  $(_image).load(function () {
    $('div.bgImage').css('background-image', 'url(./css/background.jpg)');
    $('div.bgImage').fadeTo(3000, 1);
  });
});

3条回答
倾城 Initia
2楼-- · 2019-01-29 07:25

for this you dont need to write that many lines of code this simple code will work for u...

$(document).load(function () {
  $('div.bgImage').css('background-image', 'url(./css/background.jpg)');

  $(document).ready(function () {
    $('div.bgImage').fadeIn(3000);
  });
});
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够拽才男人
3楼-- · 2019-01-29 07:29

HTML

<body>
  <div class="bgImage"></div>
  ...
</body>

CSS

.bgImage {
  position: fixed;
  top: 0; left: 0;
  right: 0; bottom: 0;
  z-index: 1;
  display: none;
}

Javascript

$(function() {
  var src = '../css/background.jpg';
  var ele = $('.bgImage');
  var img = $('<img>', {
    src: src
  }).hide().appendTo(ele).load(function() {
    $(this).remove();
    ele.css('background-image', 'url('+src+')').fadeIn(3000);
  });
});
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Melony?
4楼-- · 2019-01-29 07:37

use

 $('div.bgImage').animate({ opacity: 1 }, { duration: 3000 });

assuming you are starting of with style="opacity: 0;"

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