How to call a Java function inside JavaScript Function? Code language: JavaScript (javascript) In this syntax: cb is a callback function to be executed after the timer expires. . . Let us see an example. After long debug sessions finally I realized that the problem is arising from the fact that second function is getting called before first one is finished. Javascript program to display a timed text every 2 seconds till 6 seconds. Example: The function will be executed after 5 seconds (5000 milliseconds). To add delay in a loop, use the setTimeout() metod in JavaScript. The two key methods to use with JavaScript are: setTimeout ( function, milliseconds) Executes a function, after waiting a specified number of milliseconds. In this program, two buttons are present. How to call a JavaScript function on a click event? JavaScript can initiate an action or repeat it after a specified interval. function func() { function func() { As already mentioned, setTimeout() has different parameters. How does Delay Function Work in JavaScript? "); A text “Please click the button “Click me” and see what happens after 3 seconds” is also displayed below the button. functionname − The function name for the function to be executed. Tip: 1000 ms = 1 second. javascript documentation: Delay function call. Start Your Free Software Development Course, Web development, programming languages, Software testing & others. setInterval ( function, milliseconds) Same as setTimeout (), but repeats the execution of the function continuously. Similarly, on clicking the button Stop execution, clearTimeout will be called. How to turn a String into a JavaScript function call? Looking back at the docs, you realize that the problem is that the first argument is actually supposed to be a function call, not the delay. On clicking the button, a message gets displayed as shown below.