JS倒计时在谷歌浏览器显示不出来

代码如下：

 <div id="leftTime"></div> 
<script>   
     var leftTime = <%=Integer.parseInt("7200")%>;;   
     function showLeftTime(){  
         var leftMinutes = parseInt(leftTime/60);  
         var leftSeconds = parseInt(leftTime%60); 
        if(leftTime < 0){  
             clearInterval(timer);  
             document.location.href ="paperinfo.jsp";         
         }else{  
             document.getElementById('leftTime').innerHTML = '剩余时间：'+leftMinutes+'分'+leftSeconds+'秒';  
         }  
         leftTime--;  
     }  
        </script>

你先看下你的页面js文件导入了没

你函数都没执行怎么显示，和浏览器没关系

 <div id="leftTime"></div>
<script>

    var leftTime =7200// <%=Integer.parseInt("7200")%>;;
    function showLeftTime(){
        var leftMinutes = parseInt(leftTime/60);
        var leftSeconds = parseInt(leftTime%60);
        if(leftTime < 0){
            clearInterval(timer);
            document.location.href ="paperinfo.jsp";
        }else{
            document.getElementById('leftTime').innerHTML = '剩余时间：'+leftMinutes+'分'+leftSeconds+'秒';
        }
        leftTime--;
    }
    showLeftTime()
    setInterval(showLeftTime,1000)
</script>

<br><br> var leftTime = &lt;%=Integer.parseInt(&quot;7200&quot;)%&gt;;;<br><br> function showLeftTime(){<br><br> var leftMinutes = parseInt(leftTime/60);<br><br> var leftSeconds = parseInt(leftTime%60); <br> if(leftTime &lt; 0){<br><br> clearInterval(timer);<br><br> document.location.href =&quot;paperinfo.jsp&quot;;<br><br> }else{<br><br> document.getElementById(&#39;leftTime&#39;).innerHTML = &#39;剩余时间：&#39;+leftMinutes+&#39;分&#39;+leftSeconds+&#39;秒&#39;;<br><br> }<br><br> leftTime--;<br><br> }<br><br>

              你的这个函数执行了吗？     看你写的script  里面没有调用你的方法的    ，  你可以写成：
                <script>  
                $（function（）{
                             var leftTime = <%=Integer.parseInt("7200")%>;
                           showLeftTime()；

                }）
                 var leftTime = <%=Integer.parseInt("7200")%>;;   
 function showLeftTime(){  
     var leftMinutes = parseInt(leftTime/60);  
     var leftSeconds = parseInt(leftTime%60); 
    if(leftTime < 0){  
         clearInterval(timer);  
         document.location.href ="paperinfo.jsp";         
     }else{  
         document.getElementById('leftTime').innerHTML = '剩余时间：'+leftMinutes+'分'+leftSeconds+'秒';  
     }  
     leftTime--;  
 }  

    </script>