JavaScript how to make a time delay

This article explores how to create a time delay in Javascript using setTimeout() with an example.

Setting a Time Delay in JavaScript

Setting a time delay in JavaScript is relatively simple, and can be achieved using the setTimeout() function. The setTimeout() function takes two parameters, a callback function and the amount of time to wait before the callback is executed. Here is an example of how to set a time delay of 1000 milliseconds (1 second):

setTimeout(function(){
    console.log("This message appears after 1 second");
}, 1000);

The setTimeout() function can be used to delay the execution of any code, making it ideal for creating a time delay in JavaScript. Even though the time delay can be set in milliseconds, it is important to remember that actual delay will depend on the system’s performance. For example, a delay of 1000 milliseconds on a system with a slow processor may take longer to execute than a delay of 1000 milliseconds on a system with a fast processor.

The setTimeout() function can also be used to create a repeating delay. This can be done by setting the second parameter to 0. Here is an example of how to create a repeating delay of 1000 milliseconds:

setTimeout(function(){
    console.log("This message appears every 1 second");
}, 0);

The setTimeout() function can also be used to create a delay before the execution of a particular code block. For example, here is an example of how to create a delay of 1000 milliseconds before executing a particular code block:

setTimeout(function(){
    console.log("This code block will be executed after 1 second");
}, 1000);

In conclusion, the setTimeout() function is a powerful tool for creating a time delay in JavaScript. With a few lines of code, you can easily create a delay before the execution of any code block, or create a repeating delay. Remember, however, that the actual delay will depend on the system’s performance.