再会!使用javascript,我正在尝试创建一个函数,该函数将创建一个div
与触发按钮/ div 有小偏移的元素。好消息是,至少创建的元素数量与触发的效果之一一样多。坏消息是divX
和Y
div 的样式不能正常工作。
代码实际上很短,我发布了一些评论以使其更具可读性,运行该函数时我没有收到任何错误,所以我真的不知道错误在哪里。
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title></title>
<style>
/*What will be created*/
.box {
width: 30px;
height: 30px;
background-color:red;
}
/*The positioning for the first button*/
.btm12 {
margin-left:50%;
margin-top:5%
}
/*The positioning for the second button*/
.btm1 {
margin-left:30%;
margin-top:10%
}
</style>
</head>
<body>
<button id="btn" onclick="createBox()" class="btm1">Click me</button><br />
<button id="btn2" onclick="createBox()" class="btm12">Click me</button>
</body>
</html>
<script>
document.getElementById("btn").onclick = function () { createBox(this.id); };
document.getElementById("btn2").onclick = function () { createBox(this.id); };
function createBox(IDI) {
//get reference to the element
var element = document.getElementById(IDI);
//a way we can acces the X and Y coordinates
var position = element.getBoundingClientRect();
var x = position.left;
var y = position.top;
//create, style and set the X/Y of the the div element
var box = document.createElement("div");
box.className = "box";
box.style.left = x;
box.style.top = y -10;
box.style.position = "absolute";
//Apend the element to the body
document.body.appendChild(box);
}
</script>