1. I want to use the onclick click event to get the data-id value of each an attribute, but there is no response. Is there any way to get the value of each attribute?
Please take a look at the following code:
html file
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<ul>
<li>
<a id="showClick" href="" data-id="1">dd</a>
</li>
<li>
<a id="showClick" href="" data-id="2">ee</a>
</li>
<li>
<a id="showClick" href="" data-id="3">gg</a>
</li>
<li>
<a id="showClick" href="" data-id="4">xx</a>
</li>
</ul>
<script type="text/javascript">
window.onload = function () {
var showClick = document.getElementById("showClick");
for (var i = 0; i < showClick.length; iPP) {
(function (i) {
showClick[i].onclick = function (event) {
event.preventdefault()
alert(showClick.getAttribute("data-id"));
}
})(i);
}
</script>