本文實例講述了js實現的星星評分功能函數。分享給大家供大家參考，具體如下：
<!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>星星評分</title><script type="text/javascript">function rate(obj,oEvent){// 圖片地址設置var imgSrc = '../images/s0.gif'; //沒有填色的星星var imgSrc_2 = '../images/s1.gif'; //打分后有顏色的星星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這個數字寫入到數據庫中,作為評分的依據 };}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="很爛" /> <img src="../images/s0.gif" title="一般" /> <img src="../images/s0.gif" title="還好" /> <img src="../images/s0.gif" title="較好" /> <img src="../images/s0.gif" title="很好" /> </p></body></html>希望本文所述對大家JavaScript程序設計有所幫助。
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