如何停止setInterval？清除间隔不起作用

Question

我想制作移动和停止程序。这个程序只有一个按钮。该按钮是所有程序。是的，这是超级简单的程序。程序的问题是球没有停下来

function onSubmit() {
  var tev = setInterval(move, 500);
  if (animate == false) {
    setInterval(move, 500);
    animate = true;
  } else {
    clearInterval(tev);
    animate = false;
  }
}
<input type="button" onclick="onSubmit();" value="Shoot"/>

我想要的是当我点击投篮按钮时，球应该移动，再次点击，停止。执行我的代码，单击一次，球正确移动。再次点击，它不会停止。这是我的问题。如何停球？

Answer 1

问题是每次按下按钮时都会重置 tev。将该值保存在函数之外，它将正常工作。

// Save outside of the function so it will keep it's value
var timeoutID;
document.getElementById('clickMe').addEventListener('click', function() {
  // Notice that I'm not re-assigning timeoutID
  // every time I click the button
  if (timeoutID) {
    console.log('Stopped');
    clearInterval(timeoutID);
    
    // Clear out the ID value so we're ready to start again
    timeoutID = null;
  } else {
    timeoutID = setInterval(function() {
      console.log('Rolling...');
    }, 500);
  }
});

<button id="clickMe">Start/Stop</button>

Answer 2

var moving = false;
var interval;

// handle the click
function handleClick() {
    // if moving set moving to false, otherwise set it to true
    moving = moving ? stop() : start();
}

// start the interval that calls move function and set moving to true
function start() {
    moving = true;
    interval = setInterval(function() {
        move();
    }, 500);
}

// clear the interval and set moving to false
function stop() {
    moving = false;
    clearInterval(interval);
}

如何停止setInterval？清除间隔不起作用

how to stop setInterval? clearInterval doesn't work

javascript

boolean

clearinterval