Question

我有一个if语句，条件是如果numberOfFingers == 5那么计数器将增加1，我希望计数器仅在numberOfFingers的持续时间为5秒时增加1。（这是跳跃运动）这可能吗？

    if (numberOfFingers == 5) {
        var start = parseInt(document.getElementById('count').innerHTML);
        var end = start+1;
        document.getElementById('count').innerHTML = end;
       }

Answer 1

看看“setTimeout”并尝试这样的事情：

if(numberOfFingers == 5) { 
  setTimeout(function(){
    if(numberOfFingers == 5){ //5 fingers still after 5s
      var start = parseInt(document.getElementById('count').innerHTML);
      var end = start+1;
      document.getElementById('count').innerHTML = end;
    }
  }, 5*1000); //your 5s 
}

Javascript if语句在条件上设置时间

1 个答案: