第一个输入创建一个名为Enter#of Circles的循环,创建多个div。每个div包含一个圆和一个输入对象。
输入颜色应该使用从divID中拉出的ID来更改同一div中圆圈的颜色。
ID被拉出循环,但由于事件监听器似乎无法正常工作,但似乎无法正常工作。
有关做错的任何线索?
<!DOCTYPE html>
<head>
<title>Bins Status</title>
<style>
div {
width: 120px;
height: 120px;
display: inline-block;
margin-left: 1px;
}
</style>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0; target-densitydpi=device-dpi" />
<link rel="stylesheet" type="text/css" href="style.css"/>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"> </script>
<script type="text/javascript" src="script.js"></script>
</head>
<body>
<br>
<b>Enter # of Circles<b>
<br>
<input type="integer" id="circles">
</b></b>
<form>
<div id="Participentfieldwrap">
<svg height="100" width="200">
<line x1="0" y1="50" x2="100000000" y2="10000" style="stroke:rgb(0,255,0);stroke-width:5" />
<svg height="100" width="100">
<circle id="cir" cx="50" cy="50" r="30" stroke="black" stroke-width="3" />
</svg>
</svg>
<br>
<b>Color<b>
<br>
<input type="integer" id="Color">
</b></b>
<script>
//Inputing integer 1, 2 or 3 which instantly applies color formatting (RGB) to circle in the same div
var cir = document.getElementById("cir");
var into = document.getElementById("Color");
into.addEventListener("keyup", myFunction, false);
function myFunction() {
if(document.getElementById("Color").value == 1)
cir.style.fill = "green";
else if(document.getElementById("Color").value == 2)
cir.style.fill = "red";
else if(document.getElementById("Color").value == 3)
cir.style.fill = "blue";
else cir.style.fill = "Yellow";
}
</script>
</div>
</form>
<script type="text/javascript">
//Loop for creating multiple divs in a form using a limit that is set in an integer input
var participantsField = document.getElementById("Participentfieldwrap"),
form = document.getElementsByTagName("form")[0],
ContestantNum = document.getElementById("circles"),
i, timer;
function createCircles(val) {
// Removing previous circles
while (form.firstChild) {
form.removeChild(form.firstChild);
}
for(i = 0; i < val; i++) {
var clone = participantsField.cloneNode(true);
clone.id = "Participentfieldwrap_" + i;
clone.querySelector("input").id = "Color_" + i;
clone.querySelector("circle").id = "cir_" + i;
form.appendChild(clone);
}
}
ContestantNum.addEventListener('keydown', function(e) {
if(timer) {
clearTimeout(timer);
}
timer = setTimeout(function() {
createCircles(ContestantNum.value);
}, 800);
});
</script>
</body>
</html>
答案 0 :(得分:0)
问题是你的函数调用id&#34; cir&#34;和&#34;颜色&#34;当你创建圈子时,id是&#34; cir_0&#34;和&#34; color_0&#34;。另一个问题是DOM中的新元素不会激活页面加载时启动的功能。
我不知道如何使用纯JavaScript进行此操作,但here我使用jquery留下了解决方案。
来自墨西哥的问候。