所以我在复制图像时遇到了一些麻烦...例如，我想复制 3 张独特的图片，但只有一张出来了。如果您还可以帮助我使代码在整个网页上重复 50 次，并在达到 50 行图像时停止？谢谢，这是代码
<!DOCTYPE html>
<html>
<head>
<title>RSS Earth Map</title>
<style>
body {
background-image: url("https://api.edmodo.com/files/717111096/download?f=9k7y8m7if6dkcq345y53s4yp4");
}
img {
border: 0px;
}
</style>
</head>
<body>
<div id="cDunes">
<img src="https://api.edmodo.com/files/717111092/download?f=5xvdsuiuz1khl27tlrkqk9ihy"/>
</div>
<div id="eDunes">
<img src="https://api.edmodo.com/files/717111093/download?f=butw29huynzzfmr2khesrabmf"/>
</div>
<div id="forest>
<img id="forest src="https://api.edmodo.com/files/717111094/download?f=8thtza1n3c1jcjcbz8zxjm6oy"/>
</div>
<div id="oasis">
<img id="oasis" src="https://api.edmodo.com/files/717111095/download?f=5zrg0l9f98ec2wak40fm2wkwi"/>
</div>
<script>
var choose = Math.floor((Math.random() * 2) + 1);
function createCDunes() {
var cDunes = document.getElementById("cDunes");
var cln = cDunes.cloneNode(true);
document.body.appendChild(cln);
}
function createEDunes() {
var eDunes = document.getElementById("eDunes");
var cln2 = eDunes.cloneNode(true);
document.body.appendChild(cln2);
}
function createForest() {
var oasis = document.getElementById("oasis");
var cln3 = oasis.cloneNode(true);
document.body.appendChild(cln3);
}
for (var line=1; line<60; line++) {
for(var i=1;i<29;i++) {
if(choose == 1) {
createCDunes();
} else if (choose == 2){
createEDunes();
} else {
createForest();
}
}
}
</script>
</body>
</html>最佳答案
首先，你在这里遗漏了两个双引号
<div id="forest>
<img id="forest src="https://api.edmodo.com/files/717111094/download?f=8thtza1n3c1jcjcbz8zxjm6oy"/>
</div>
其次，选择 随机变量被赋值一次。您需要将其移动到循环内才能:
for (var line = 1; line < 60; line++) {
for (var i = 1; i < 29; i++) {
var choose = Math.floor((Math.random() * 3));
if (choose == 1) {
createCDunes();
} else if (choose == 2) {
createEDunes();
} else {
createForest();
}
}
}
另请注意，我稍微更改了随机方程。
这是完整的片段:
function createCDunes() {
var cDunes = document.getElementById("cDunes");
var cln = cDunes.cloneNode(true);
document.body.appendChild(cln);
}
function createEDunes() {
var eDunes = document.getElementById("eDunes");
var cln2 = eDunes.cloneNode(true);
document.body.appendChild(cln2);
}
function createForest() {
var oasis = document.getElementById("oasis");
var cln3 = oasis.cloneNode(true);
document.body.appendChild(cln3);
}
for (var line = 1; line < 60; line++) {
for (var i = 1; i < 29; i++) {
var choose = Math.floor((Math.random() * 3));
if (choose == 1) {
createCDunes();
} else if (choose == 2) {
createEDunes();
} else {
createForest();
}
}
}body {
background-image: url("https://api.edmodo.com/files/717111096/download?f=9k7y8m7if6dkcq345y53s4yp4");
}
img {
border: 0px;
}<body>
<div id="cDunes">
<img src="https://api.edmodo.com/files/717111092/download?f=5xvdsuiuz1khl27tlrkqk9ihy" />
</div>
<div id="eDunes">
<img src="https://api.edmodo.com/files/717111093/download?f=butw29huynzzfmr2khesrabmf" />
</div>
<div id="forest">
<img id="forest" src="https://api.edmodo.com/files/717111094/download?f=8thtza1n3c1jcjcbz8zxjm6oy" />
</div>
<div id="oasis">
<img id="oasis" src="https://api.edmodo.com/files/717111095/download?f=5zrg0l9f98ec2wak40fm2wkwi" />
</div>关于javascript - 复制图像，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41074587/