用JS在打一个三角形判断函数代码与预期不符却不报错

不知道为什么输出结果与预期不符,却没有报错,大神们帮忙看看,报错图片上传在附件

<!DOCTYPE html>
<html>
<head>
   <meta charset="UTF-8">
   <title>Document</title>
</head>
<body>
   <input type="text" name="triangle" id="triangle1" value="0" ></input>
   <input type="text" name="triangle" id="triangle2" value="0" ></input>
   <input type="text" name="triangle" id="triangle3" value="0" ></input>
   <input type="button" value="确认" onclick="judgement()">结果是:</input>
   <span id="result">结果</span>
   <script>
       var judge_triangle1 =document.getElementById("triangle1").value;
       var judge_triangle2 =document.getElementById("triangle2").value;
       var judge_triangle3 =document.getElementById("triangle3").value;
       var result=document.getElementById("result");       var triangle=document.getElementById("triangle");
       var compile1=judge_triangle1*1+triangle2*1;
       var compile2=judge_triangle1*1-triangle2*1;
       var compile3=triangle3*1;
       function judgement(){
           if (compile1>compile3)
           {
                   if (compile2<compile3) {

                       return success() ;
                                                                          }
                   else{
                       return faulse() ;
                       }
           }
           else{
               return faulse() ;

               }
                           }
       function success(){
           result.innerHTML="success";
       }
       function faulse(){
           result.innerHTML="faulse";
       }
   </script>
</body>
</html>

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用JS在打一个三角形判断函数代码与预期不符却不报错

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