我希望防止我的函数在上次执行后重新执行一秒钟。我尝试过以下方法,但它不起作用。
function displayOut() {
// images
document.getElementById("imgBox").style.backgroundImage = "url(" + db.rooms[roomLoc].roomImg + ")";
// Diologue box
diologueBox.innerHTML = ""; // Clear Box
teleTyperDiologue(db.rooms[roomLoc].description +
" The room contains: " +
(function() {
let x = "";
for (let i = 0; i < db.items.length; i++) {
if (db.items[i].location === roomLoc && db.items[i].hidden === false) {
x += db.items[i].name + ", "
}
}
x = x.slice(0, x.length -2);
if (x === "") {
x = " nothing of special interest";
}
return x;
})()
+ ".");
pause();
};
function pause() {
setTimeout(function() {
// Wait one second!
}, 1000);
}
&#13;
答案 0 :(得分:1)
你可以使用这样的模式:
var executing = false;
function myFunc() {
if(!executing) {
executing = true;
//Code
console.log('Executed!');
//End code
setTimeout(function() {
executing = false;
}, 1000);
}
}
setInterval(myFunc, 100);
&#13;
所以在你的情况下,这看起来像这样:
var executing = false;
function displayOut() {
if(!executing) {
executing = true;
// images
document.getElementById("imgBox").style.backgroundImage = "url(" + db.rooms[roomLoc].roomImg + ")";
// Diologue box
diologueBox.innerHTML = ""; // Clear Box
teleTyperDiologue(db.rooms[roomLoc].description +
" The room contains: " +
(function() {
let x = "";
for (let i = 0; i < db.items.length; i++) {
if (db.items[i].location === roomLoc && db.items[i].hidden === false) {
x += db.items[i].name + ", "
}
}
x = x.slice(0, x.length -2);
if (x === "") {
x = " nothing of special interest";
}
return x;
})()
+ ".");
setTimeout(function() {
executing = false;
}, 1000);
}
};
答案 1 :(得分:0)
这个将实现:
from collections import Counter
counted = Counter([7, 4, 2, 4, 9, 6, 5, 6, 2, 0, 2, 1])
ordered = [value for value, count in counted.most_common()]
print(ordered) # [2, 4, 6, 0, 1, 5, 7, 9]
上面的代码每1秒运行一次,但是如果你想确保函数不能再次运行,那么你可以使用一个标志来代替:
function run () {
console.log('Im running');
pause(1000);
};
function pause(s) {
console.log('Im paused');
setTimeout(() =>{
run();
}, s)
};
run();
此代码将执行两次运行功能,首先按时执行,然后在2秒后再执行一次。
答案 2 :(得分:0)
尝试从下划线使用油门(http://underscorejs.org/#throttle)或去抖(http://underscorejs.org/#debounce),其中一个应该符合您的需求