There may come scenario when you want to delay execution of code or trigger something after a particular time.
Here we discuss an introduction, how JavaScript setTimeout works, the examples to implement with proper codes and outputs.Learn how to use settimeout method in javascript. Then following, the remaining alert will show up. By then, the first setTimeout will reach its timer and execute from webApi stack. Creates a promise from the sleep function using the setTimeout, then resolves after the timeout has been completed 3. setTimeout is mainly used when a particular block of code should. Calls setTimeOut 1st inside of demo then put it into the webApi Stack 2. setTimeout is a built-in Node.js API function which executes a given method only after a desired time period which should be defined in milliseconds only and it returns a timeout object which can be used further in the process. This is a guide to JavaScript setTimeout. The following article provides an outline for Node.js setTimeout. The main purpose of setTimeout is to hibernate or sleep the function for a certain amount of time. SetTimeout() method can be work with function, delay and also work with function, delay, and arguments. In both cases passing string and anonymous function gives the same output.ĭelayFun() method has setTimeout() with string as function and delay of 5 seconds. After 5 seconds a popup box with I is without function message displayed. setTimeout is a great tool in JavaScript, but it has its drawbacks and problems you should be aware of: There isn't a cross-browser way of passing a timeout callback with arguments.function (): We can pass anonymous function inside the setTimeout().So, instead of string passing, you can use anonymous function inside setTimeout() Syntax of Anonymous function inside setTimeout() method SetTimeout("alert('I am without Function')", 5000)Įxplanation to the above code: Make sure direct String passing into the setTimeout() method is not recommended. Example #4 – setTimeout() method without function and delayĭelay Example wihthout function("Direct string passing") Once click on Get My Arguments button, onClick attribute called the getArgsDelay() It will display alert box output after 5 seconds delay.
SetTimeout(getMyArgs, 5000,"Paramesh","Amardeep") Īlert("First person name is :"+firstArg+"\n"+"Second person name is :"+secondArg) Įxplanation th the above code: getMyArgs () method has to get an alert box pop up code. milliseconds : indicates the length of the time-interval between. function : first parameter is the function to be executed. Syntax: tInterval (function, milliseconds) Parameter: There are two parameter that accepted by this method. Settimeout with function, delay, arguments The setInterval () method repeats a given function at every given time-interval.
let timeoutID setTimeout (function, delay in milliseconds, argument1, argument2.) Let's break down the syntax. Here is the syntax for the setTimeout () method. Example #3 – setTimeout() method with function, delay and arguments setTimeout () is a method that will execute a piece of code after the timer has finished running. It will display an alert box with Hi! This is Parameshwar message after 5 seconds delay. Once click on Get Alert Box button, onClick attribute called the getAlertBoxDelay(). Example #2 – Alert box display after 3 seconds delay after pressing a buttonĮxplanation to the above code: myAlertBox() method has to get an alert box pop up code. After 5 seconds getNameDelay() function gives I am Amardeep. Delay the function for 5 seconds are mentioned in the getNameDelay() function with setTimeout() method within it. However, you can only call this custom wait () function from within async functions, and you need to use the await keyword. Examples to Implement in JavaScript setTimeoutīelow are the examples to implement in JavaScript setTimeout: Example #1 – Print name with every 5 seconds delayĮxplanation to the above code: printMyName() has text which we need to print. 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. Note: Internet Explorer 9 and previous versions of it, not supported for setTimeout() method with arguments.