[英]Can't figure out how to add fade effect
我如何在此代碼中添加淡入淡出? 我試圖使它看起來像這樣
http://jsfiddle.net/xmLk4/我嘗試了其中的代碼,但我不知道如何正確添加它。
<html>
<head>
<script type="text/javascript">
var slideimages = new Array() // create new array to preload images
slideimages[0] = new Image() // create new instance of image object
slideimages[0].src = "http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/000080_Navy_Blue_Square.svg/2000px-000080_Navy_Blue_Square.svg.png"
// set image object src property to an image's src, preloading that image in the process
slideimages[1] = new Image()
slideimages[1].src = "http://upload.wikimedia.org/wikipedia/commons/thumb/2/25/Red.svg/120px-Red.svg.png"
slideimages[2] = new Image()
slideimages[2].src = "http://static.tumblr.com/674bc8c8a561428e14d7c5abe10d696f/ijaflyo/IdQmnirks/tumblr_static_greenbox.png"
</script>
</head>
<body>
<img src="firstcar.gif" id="slide" width="948" height="403" />
<script type="text/javascript">
//variable that will increment through the images
var step=0
function slideit(){
//if browser does not support the image object, exit.
if (!document.images)
return
document.getElementById('slide').src = slideimages[step].src
if (step<2)
step++
else
step=0
//call function "slideit()" every 2.5 seconds
setTimeout("slideit()",2500)
}
slideit()
</script>
</body>
</html>`
我不確定你到底在問什么。
您是說CSS過渡嗎? 如果是這樣,請考慮添加
過渡:全部0.6s;
您可以將其添加為img style= "transition:all 0.6s;"
立即嘗試
function slideit(){
if (!document.images)
return
document.getElementById('slide').style.opacity = "0";
setTimeout(function(){
document.getElementById('slide').src = slideimages[step].src;
document.getElementById('slide').style.opacity = "1";
},500)
if (step<2)
step++
else
step=0
setTimeout(slideit,2500)
}
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