Like above example we set a delay to display a message for a spacific times. Each call remembers the real time from the previous one in the times array. In the browser, there’s a limitation of how often nested timers can run. ; If the condition evaluates to true, the body of the loop inside the do statement is executed again. ; This process continues until the condition evaluates to false. Then the condition is evaluated. Create a promise-based alternative. The continue statement can be used to restart a while, do-while, for, or label statement.. I have looked all over and everywhere people are mentioning setTimeout, but that only causes a delayed start of a function.. The HTML5 standard says: “after five nested timers, the interval is forced to be at least 4 milliseconds.”.. Let’s demonstrate what it means with the example below. The result is what you’d expect. An infinite while loop is started. The function delay(ms) should return a promise. I just want to slow my for loop so you can visually notice each iteration. The delay parameter you pass to these functions is the minimum delay time to execute the callback. The built-in function setTimeout uses callbacks. JavaScript wait() To make JavaScript wait, use the combination of Promises, async/await, and setTimeout() function through which you can write the wait() function that will work as you would expect it should. condition An expression evaluated after each pass through the loop. The setTimeout call in it re-schedules itself with zero delay. But it won't work with loops that require a callback. When you use continue without a label, it terminates the current iteration of the innermost enclosing while, do-while, or for statement and continues execution of the loop with the next iteration. That promise should resolve after ms milliseconds, so that we can add .then to it, like this: When you use await, you expect JavaScript to pause execution until the awaited promise gets resolved. Await in a forEach loop. This flag is set when a System.threading.timer expires. Then only i should send next frame. ; If the condition evaluates to true, the body of the loop inside the do statement is executed again. Here, The body of the loop is executed at first. The 1e10 is 1 with 10 zeros in front of it, so the loop is a 10 Billion ticks loop (which basically simulates a busy CPU). Method 1: Using an infinite loop to keep checking for the elapsed time The time that the sleep function starts is first found using the new Date().getTime() method. The code works fine and does what I want it to do, but the for loop executes so quickly that you don't notice the change in opacity. In contrast to the break statement, continue does not terminate the execution of the loop entirely. We'll look at how await affects forEach, map, and filter in the next few sections. We'd like a delay in between. Please see the do while loop , i have added that because i have to wait until a timer expires and _stMinExpired is set to true. This of course is a very bad thing to do in practice, but it’ll help you here to understand that setTimeout delay is not a guaranteed thing, but rather a minimum thing. 'Start' 'Apple: 27' 'Grape: 0' 'Pear: 14' 'End' This behaviour works with most loops (like while and for-of loops)… Examples of such loops that require a fallback include forEach, map, filter, and reduce. Essentially in JavaScript there is no way to pause a running loop. Node can do nothing while this loop is ticking. ; The condition is evaluated once again. To execute multiple statements within the loop, use a block statement ({ ... }) to group those statements. We'll do the same thing as we did in the for-loop example. 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