如何更改setInterval中Variable的值

Question

在方法setInterval中，时间值只会更改一次我想用checkLevel 的值来更改它

var time=checkLevel((；

//在的msec水平上布线的方法

setInterval(function (event) {

time = checkLevel();
if (!isLoser) {
//Leere die Fläche
ctx.clearRect(0, 0, canvasWidth, canvasHeight);
//Neu durchführen
randomX = getRandomPosition(canvasWidth - fishSize);
randomY = getRandomPosition(canvasHeight - fishSize);
var randomFish = Math.floor(Math.random() * 11) + 1;
fish.src = 'images/fish' + randomFish + '.png';
}
}, time);

Answer 1

您可以创建一个递归函数来更改间隔，然后只需调用一次间隔即可启动它，然后该函数每次调用都会更改间隔。

var _timer;
function showFish(){
if (!isLoser) {
//Leere die Fläche
ctx.clearRect(0, 0, canvasWidth, canvasHeight);
//Neu durchführen
randomX = getRandomPosition(canvasWidth - fishSize);
randomY = getRandomPosition(canvasHeight - fishSize);
var randomFish = Math.floor(Math.random() * 11) + 1;
fish.src = 'images/fish' + randomFish + '.png';
}
_timer = setTimeout(showFish,  checkLevel());
}

_timer = setTimeout(showFish,  checkLevel());