javascript 评分控件(鼠标滑动)

来源：互联网发布：杭州友谦网络编辑：程序博客网时间：2024/05/17 23:45

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script type="text/javascript">
        function ArrayIndexof(arr, inElement) {
            for (var i = 0; i < arr.length; i++) {
                if (arr[i] == inElement) {
                    return i;
                }
            }
            return -1;
        }
        function GetTDS() {
            var tbl = document.getElementById("tblMain");
            var tds = tbl.getElementsByTagName("td");
            return tds;
        }
        function iniEvent() {
            var tds = GetTDS();
            for (var i = 0; i < tds.length; i++) {
                td = tds[i];
                td.onmouseover = TdOnMouseOver;
            }
            var tbl = document.getElementById("tblMain");
            tbl.onmouseout = TableMouseOut;
        }
        function SetRating(tdTmp) {
            var tds = GetTDS();
            var index = ArrayIndexof(tds, tdTmp);
            for (var i = 0; i <= index; i++) {
                td = tds[i];
                td.innerHTML = "★";
            }
            for (var i = index + 1; i < tds.length; i++) {
                td = tds[i];
                td.innerHTML = "☆";
            }
        }
        function TdOnMouseOver() {
            SetRating(this);
        }
        //鼠标离开表格后自动清除
        function TableMouseOut() {
            var tds = GetTDS();
            for (var i = 0; i < tds.length; i++) {
                td = tds[i];
                td.innerHTML = "☆";
            }
        }
    </script>
</head>
<body onload="iniEvent()">
    <table id="tblMain" border="1">
        <tr>
            <td>☆</td>
            <td>☆</td>
            <td>☆</td>
            <td>☆</td>
            <td>☆</td>
        </tr>
    </table>
</body>
</html>