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Javascript implements five-star evaluation code (source code download)_javascript skills

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Release: 2016-05-16 15:45:59
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Without further ado, here’s the rendering:

View the demo                                                                  Code in javascript

var spans=document.getElementsByTagName("span");
var flag=5;//这个值随便取,只要不是01234就行
var Expand=function(){
//扩展代码,暂无
};

onload=function(){
  //循环载入鼠标移入事件
  for(var i=0;i<spans.length;i++){
    spans[i].onmouseover=function(){
      var id=parseInt(this.id);
      for(var i=0;i<=id;i++){
        spans[i].innerHTML="★";
      }
      for(var j=id+1;j<5;j++){
        spans[j].innerHTML="☆";
      }
    };
  }
  //循环载入鼠标点击星星事件
  for(var i=0;i<spans.length;i++){
    spans[i].onclick=function(){
      var id=parseInt(this.id);
      flag=id;
      for(var i=0;i<=id;i++){
        spans[i].innerHTML="★";
      }
      Expand();//这里是鼠标点击星星的扩展,例如出现分值之类的,总之要扩展什么随你的大小便啦~
    };
  }
  //载入鼠标离开div事件
  document.getElementById("div").onmouseout=function(){
    //如果tag是3,则循环给把0 1 2 3几个星星整黄
    if(flag>=0 && flag<=4){
      for(var i=0;i<=flag;i++){
        spans[i].innerHTML="★";
      }
      for(var j=flag+1;j<5;j++){
        spans[j].innerHTML="☆";
     }
  }
    //如果tag没有值或者是初值5,则把所有的星星还原成空星星
    else{
      for(var i=0;i<spans.length;i++){
        spans[i].innerHTML="☆";
      }
    }
  };
};
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Code in body

The above code is very simple, just implement the five-star evaluation function in javascript. There are other methods, so I won’t write them if time is limited. Please continue to pay attention to this site, thank you. !
<div id="div">
    <span id="0">☆</span><span id="1">☆</span><span id="2">☆</span><span id="3">☆</span><span id="4">☆</span>
</div>
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