Javascript中的图像滑块

Question

此图像滑块不会显示下一张图片。 我有3个图像.. image1，image2和image3但它只停留在image1 ..

<script type="text/javascript">
var image1 = new Image();
image1.src="jokes.png";
var image2 = new Image();
image2.src="facts.png";
var image3 = new Image();
image3.src="csharp.png";
</script>



<img src="jokes.png" name="slide" width="200" height="200">
<script type="text/javascript">
var step = 1;

function slideit() {
    document.images.slide.src = eval("image" + step + ".src");
    if (step < 3) {
        step++;
        else step = 1
        setTimeout("slideit()", 2500);
    }
    slideit()
}
</script>

Answer 1

因为你的函数slideIt永远不会被调用。 第一个调用包含在函数内...

尝试这个

<script type="text/javascript">
var step = 1;

function slideit() {
    document.images.slide.src = eval("image" + step + ".src");

    if (step < 3)
        step++;
    else 
        step = 1

    setTimeout("slideit()", 2500);
}

//First call
slideit();
</script>

Answer 2

除了sdespont的答案，语法有问题

<script type="text/javascript">
var step = 1;

function slideit() {
    document.images.slide.src = eval("image" + step + ".src");
    if (step < 3){ 
      step++;
    }else{ 
     step = 1;
    }
    setTimeout("slideit()", 2500);

}

//First call
slideit();
</script>