JavaScript实现星级评分

2019-09-08 郑州网站建设  

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ""><html xmlns="" ><head> <title>JavaScript星级评分</title> <style type="text/css"> *{margin:0;padding:0;} .wrapper{height:20px;padding:5px;width:130px;margin:100px auto 10px;} </style> <script type="text/javascript"> function ArrayIndexOf(arr, element) { for (var i = 0; i < arr.length; i++) { if (arr[i] == element) { return i; } } return -1; } function GetTds() { var tbl = document.getElementById("tblMain"); var tds = tbl.getElementsByTagName("td"); return tds; } function InitEvent() { var tds=GetTds(); for (var i = 0; i < tds.length; i++) { var td = tds[i]; td.onmouseover = TdOnclick; td.style.cursor = "pointer"; } } function TdOnclick() { var tds = GetTds(); var index = ArrayIndexOf(tds, this); for (var i = 0; i <=index; i++) { var td = tds[i]; td.innerHTML = "★"; } for (var j = index + 1; j < tds.length; j++) { var td = tds[j]; td.innerHTML = "☆"; } } </script></head><body onload="InitEvent()" class="wrapper"><table id="tblMain"><tr><td>☆</td><td>☆</td><td>☆</td><td>☆</td><td>☆</td></tr></table></body></html>


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