我有一个setInterval函数，可以绘制图形。

Question

但是我想停止setInterval函数而不让图形消失？当setInterval停止时，图形消失或至少显示最后7个点。我该怎么办？提前谢谢！

`

var graphingID = setInterval(function(){
  if (itertn == char.length){
    clearInterval(graphingID);
   }
  itertn++;
   //Add two random numbers for each dataset
  myLiveChart.addData([char[itertn], char[itertn]], ++latestLabel);
  // Remove the first point so we dont just add values forever 
  //updateDaw();
  myLiveChart.removeData(2);
}, 50);

`

Answer 1

这样的事可能吗？

var graphingID = setInterval(function(){
  if (itertn == char.length){// is it time to stop? if yes clear interval
     clearInterval(graphingID);
   }
  else{// if not, go on as usual

      itertn++;
       //Add two random numbers for each dataset
      myLiveChart.addData([char[itertn], char[itertn]], ++latestLabel);
      // Remove the first point so we dont just add values forever 
      //updateDaw();
      myLiveChart.removeData(2);
 }
}, 50);

Answer 2

清除时不要继续：

if (itertn == char.length){ clearInterval(graphingID); return; }