javascript simulation scoring control implementation method

2020-06-15 07:35:07
OfStack

An example of javascript simulation scoring control is presented in this paper. Share to everybody for everybody reference. Specific implementation methods are as follows:


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title> Dynamic setting style( Effect of grading )</title>
<script type="text/javascript">
// To find the 1 The index position of an element in an array 
function ArrayIndexOf(arr, element) {
  for (var i = 0; i < arr.length; i++) {
  if (arr[i] == element) {
   return i;
  }
 }
  return -1;
}
function IniEvent() {
  var tbl = document.getElementById("tblRating");
  var tds = tbl.getElementsByTagName("td");
  for (var i = 0; i < tds.length; i++) {
 var td = tds[i];
 td.onclick = tdOnClick;
 td.style.cursor = "pointer"; // Set the cursor hand shape 
  }
}
function tdOnClick() {
  var tbl = document.getElementById("tblRating");
  var tds = tbl.getElementsByTagName("td");
  // Find what is currently clicked td The index of the 
   var index = ArrayIndexOf(tds, this);
  // Before the td Instead of red 
  for (var i = 0; i <= index; i++) {
  tds[i].style.background = "red";
  }
  // After the td Instead of white 
  for (var i = index + 1; i < tds.length; i++) {
   tds[i].style.background = "white";
  }
}
</script>
</head>
<body onload="IniEvent()">
  <table id="tblRating">
  <tr>
    <td> Do things </td>
    <td> Do things </td>
    <td> Do things </td>
    <td> Do things </td>
    <td> Do things </td>
  </tr>
  </table>
</body>
</html>

Hopefully, this article has been helpful in your javascript programming.