<html>
<body>
<table>
<tr>
<td id="a">1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
</tr>
</table>
<body>
<script src="http://172.29.5.201/assets/js/core/jquery.min.js"></script>
<script>
alert($("-sharpa").index());</script>
</html>
<html>
<body>
<table>
<tr>
<td id="a">1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
</tr>
</table>
<body>
<script src="http://172.29.5.201/assets/js/core/jquery.min.js"></script>
<script>
alert($("-sharpa").index());</script>
</html>function searchIndex(id){
// td
var td = document.getElementById("td");
// td
var arr = Array.from(td.parentNode.children);
//
arr = arr.filter(function(item){
return td == item;
});
}function getIndexFromDomOrSelector(domOrSelector){
let dom;
// domSelector
if(domOrSelector instanceof HTMLElement || domOrSelector instanceof Element){
dom = domOrSelector;
}else if(typeof domOrSelector === "string"){
dom = document.querySelector(domOrSelector);
if(!dom) throw new Error("selectordom")
}else{
throw new Error("");
}
//
const brothers = Array.from(dom.parentNode.children);
return brothers.indexOf(dom);
}
// 1
getIndexFromDomOrSelector("-sharpa")
// 2
const td = document.getElementById("a");
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