Keep monitoring the console and once minimum 10 seconds time has passed you will see that delayedFuntion(1st parameter in setTimeout) is executed and whatever code is written inside this method gets executed.
Note this is the minimum time of delay and not the exact time after which delayedFuntion(1 st parameter in setTimeout) will get executed. Now the setTimeout method starts executing and counting on the time which is defined in delayTimeInMS(2nd parameter in setTimeout). For Demo purpose we are just displaying simple HTML content as below. On Browser window HTML content can be rendered to display the Payment related details or asking for Payment information which later will redirect to the Payment Gateway. To start the application run the command node index.js in CMD.Īs our Node Application is listening on port 3000, once CMD says the application has started to listen on port 300, open chrome window or any other browser and launch local application on http with port number as 3000. VardelayTimeInMS = 10000 //Defining time in msĬonsole.log("Payment page exceeded the time limit, please refresh the screen") Ĭonsole.log('Demo Applications has started to listen on port 3000!') Res.end() //Writing content to html using res.write
and so on) įunctiondelayedFuntion(param1, param2. SetTimeout(delayedFuntion, delayTimeInMS, param1, param2. Second parameter: It is the minimum time of delay required and should always be defined in milliseconds.Function on the fly or separately defined function both works fine here. First parameter: It should always be the function which needs delay in execution.SetTimeout(delayedFuntion, delayTimeInMS)
#Javascript settimeout software#
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#Javascript settimeout free#
JavaScript may not have a sleep or wait function, but it is easy enough to create a function or write a single line of code using an inbuilt setTimeout() function as long as you are very careful about the code and how you use it.īy itself, the setTimeout() function does not work as the sleep() method, but you can create a custom JavaScript sleep() or wait() function using async and await.Start Your Free Software Development Course This code works exactly as you might have expected because await causes the synchronous execution of a code to pause until the Promise is resolved. await new Promise(r => setTimeout(r, 1000)) Here, we use this just one line of code that will do the wait for us. app.jsĪwait new Promise(r => setTimeout(r, 1000)) wait() example in JavaScriptĬreate a new file called app.js and write the following code inside that file. However, you can only call this custom wait() function from within async functions, and you need to use the await keyword with it. To make your JavaScript code 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. Since each delay in the code snippet was the same (1000ms or 1 second), all the queued code runs simultaneously, after the single delay of 1 second.Īs discussed, the setTimeout() is not a sleep() function instead, it just queues asynchronous code for later execution.īut fortunately, it is possible to use setTimeout() to create your own sleep() function in JavaScript. Thus, each call to setTimeout() creates an asynchronous code that will execute later, after a given delay.
The reason behind this is that setTimeout() function is executed as synchronous code and the multiple functions calls to setTimeout() all run at the same time. This results in all five console log messages being displayed together, after the single delay of 1 second, instead of the desired effect of the delay of 1 second between each repeated call. So, for example, the setTimeout(1000) does not work like waiting for 1 second between your calls to the console.log() function. We need to log the values every 1 second and not just wait for 1 second and log all the values simultaneously. Well, that’s not what is supposed to happen. Instead, the execution will pause for 1 second and then print the 5 values at a time. But when you run the code, that won’t happen.