如何在X =随机数的情况下发布X个图像。在这个例子中,我设置了X = 10
<input class="randombutton" type="button" value="Randomize" onclick="randomImg1" />
<script type="text/javascript">
function randomImg1() {
myImages1 = new Array();
for (var i = 0; i < 10; i++){
myImages1.push("MyImage" + i + ".jpg");
}
var rnd = Math.floor(Math.random() * 10);
document.getElementById("image").innerHTML = "<img src='" + myImages1[rnd] + "' alt='image' />";
}
randomImg1();
</script>
<div id="image"></div>
</body>
</html>
答案 0 :(得分:0)
您声明了该功能,但您没有调用它。此外,您必须使用Array.prototype.push
代替=
来添加元素:
<!DOCTYPE html>
<html>
<body>
<input class="randombutton" type="button" value="Randomize" />
<script type="text/javascript">
function randomImg1() {
myImages1 = new Array();
myImages1.push("MyImage.jpg");
var rnd = Math.floor( Math.random() * 10 );
document.getElementById("image").innerHTML = "<img src='" + myImages1[rnd] + "' alt='image'></img>";
}
randomImg1();
</script>
<div id="image"></div>
</body>
</html>
仅供参考,在大多数情况下这仍然无效,因为你的数组只有1个元素,但是1 <= rnd <= 10
。
答案 1 :(得分:0)
您正在创建一个数组,然后将该相同的变量指定为字符串值,它不再是数组。
尝试这样的事情:
myImages1 = new Array();
for (var i = 0; i < 10; i++)
{
myImages1.push("MyImage" + i + ".jpg");
}
var rnd = Math.floor(Math.random() * 10);
document.getElementById("image").innerHTML = "<img src='" + myImages1[rnd] + "' alt='image' />";
您还需要将按钮挂钩以调用此功能,这可以通过以下方式完成:
<input class="randombutton" type="button" value="Randomize" onclick="randomImg1" />
完整的测试代码:
<html>
<head>
<script type="text/javascript">
function randomImg1()
{
myImages1 = new Array();
for (var i = 0; i < 10; i++)
{
myImages1.push("MyImage" + i + ".jpg");
}
var rnd = Math.floor(Math.random() * 10);
document.getElementById("image").innerHTML = "<img src='" + myImages1[rnd] + "' alt='image' />";
}
</script>
</head>
<body>
<input class="randombutton" type="button" value="Randomize" onclick="randomImg1()" />
<div id="image"></div>
</body>
</html>
答案 2 :(得分:0)
您要搜索的内容(如果我理解正确的话)如下:
function randomImg1() {
var imageAmount = Math.random() * 10;
var imagesHTMLBuffer = "";
var imagePath;
for (var i = 0; i < imageAmount; i++)
{
imagePath = "MyImage" + i + ".jpg";
imagesHTMLBuffer += '<img src="' + imagePath + '" alt="image" />';
}
document.getElementById("image").innerHTML = imagesHTMLBuffer;
}
答案 3 :(得分:0)
显示随机图片的随机数(最多10个):
<div id="random-image-container"></div>
var numberOfImages = Math.floor(Math.random() * 10);
var imageContainer = document.getElementById('random-image-container');
for (var i = 0; i < numberOfImages; i++)
{
var randomImage = 'http://placekitten.com/' + Math.floor(Math.random() * 200) + '/' + Math.floor(Math.random() * 200);
imageContainer.innerHTML += '<img src="' + randomImage + '" />';
}