Star rating function function implemented in js_javascript skills-JS Tutorial-php.cn

Star rating function function implemented in js_javascript skills

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Release： 2016-05-16 15:26:55

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The example in this article describes the star rating function implemented in js. Share it with everyone for your reference, the details are as follows:

<!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>

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I hope this article will be helpful to everyone in JavaScript programming.