本文实例讲述了js实现的星星评分功能函数。分享给大家供大家参考,具体如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>星星评分</title> <script type="text/javascript"> function rate(obj,oEvent){ // 图片地址设置 var imgSrc = '../images/s0.gif'; //没有填色的星星 var imgSrc_2 = '../images/s1.gif'; //打分后有颜色的星星 if(obj.rateFlag) return; var e = oEvent || window.event; var target = e.target || e.srcElement; var imgArray = obj.getElementsByTagName("img"); for(var i=0;i<imgArray.length;i++){ imgArray[i]._num = i; imgArray[i].onclick=function(){ if(obj.rateFlag) return; obj.rateFlag=true; alert(this._num+1); //this._num+1这个数字写入到数据库中,作为评分的依据 }; } if(target.tagName=="IMG"){ for(var j=0;j<imgArray.length;j++){ if(j<=target._num){ imgArray[j].src=imgSrc_2; } else { imgArray[j].src=imgSrc; } } } else { for(var k=0;k<imgArray.length;k++){ imgArray[k].src=imgSrc; } } } </script> </head> <body> <p onmouseover="rate(this,event)"> <img src="../images/s0.gif" title="很烂" /> <img src="../images/s0.gif" title="一般" /> <img src="../images/s0.gif" title="还好" /> <img src="../images/s0.gif" title="较好" /> <img src="../images/s0.gif" title="很好" /> </p> </body> </html>
希望本文所述对大家JavaScript程序设计有所帮助。