js之定时器

2021-04-11 00:28

阅读：742

YPE html>

标签：function cti cli rip lang def htm ext alt




    
    定时器

    
        #id1{
             width:150px;
             height:20px;
        }
    




     
            function showtime(){
                 var current=new Date().toLocaleString();
                 var elem=document.getElementById(‘id1‘);
                 elem.value=current;

            }
            begin()
            var clock
            function begin(){
               if (clock==undefined)
               {  showtime()
                  clock=setInterval(showtime,1000);
                }
            }
            function end(){
                clearInterval(clock)
                clock=undefined
            }




     





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