I have a Vue project with the following status in Vuex storage:
state: {
gameStartTimer: 5,
counter: false,
randomNumber: Number,
clickAlert: false
}
Now, in actions, I have the following:
actions: {
async startCounter({ state }) {
state.counter = true;
state.clickAlert = false;
while (state.gameStartTimer > 0 && state.counter) {
// 这将定时器设置为从5倒数到0
await new Promise(resolve => setTimeout(resolve, 1000));
if (state.counter)
state.gameStartTimer--;
// if语句确保在gameStartTimer达到0时获取nowTime
if (state.gameStartTimer == 0) {
let timeNow = new Date().getTime();
state.nowTime = timeNow;
}
}
state.counter = false;
// 我想在这里启动第二个定时器，每秒倒计时一次，直到randomNumber状态达到0
await new Promise(resolve => setTimeout(resolve, 1000));
if (state.clickAlert)
state.randomNumber--;
if (state.randomNumber == 0) {
state.clickAlert = true;
}
}
},
}
The problem I'm facing is that the first timer is wrapped in a while loop, which is exactly what I want, so that the game starts at 5 and counts down to 0.
Then I want the second timer (using randomNumber as duration) to run in the background and then set the clickAlert state to true.
However, I cannot make the second timer run in the async/await method. I'm not quite sure what the syntax or logic issue is.
Any tips would be greatly appreciated.
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The obvious solution seems to be to put the second timer also in a
whileloop.while (state.randomNumber > 0) { await new Promise(resolve => setTimeout(resolve, 1000)); state.randomNumber--; if (state.randomNumber === 0) { state.clickAlert = true; } }async/awaitis just a way to avoid callback functions. It is functionally equivalent to the following code:while (state.randomNumber > 0) { setTimeout(() => { state.randomNumber--; }, 1000); }