If you are going to define a functionality which will be used in various HTML documents then it's better to keep that functionality in a separate JavaScript file and then include that file in your HTML documents. As for your question on having the code run after the user clicks the table cell, you can do this. You can think of JavaScript as an extension to HTML; an add-on, if you will.Here’s how it works.

But there is a facility to pass different parameters while calling a function. It defines a function that takes two parameters and concatenates them before returning the resultant in the calling program.There is a lot to learn about JavaScript functions, however we have covered the most important concepts in this tutorial. It helps programmers in writing modular codes. "return" to execute the code after the invoking statement.Calculate the product of two numbers, and return the result:You can reuse code: Define the code once, and use it many times.You can use the same code many times with different arguments, to produce different This article has been viewed 66,725 times. There are many events available, but these are the ones you are most likely to use: OnClick In JavaScript functions are first-class objects - a function is a regular object of type function. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. Further down in the HTML file, the JavaScript function is associated with an event handler — specifically, the processOrder button’s onClick event handler.

} A function can take multiple parameters separated by comma.For example, you can pass two numbers in a function and then you can expect the function to return their multiplication in your calling program.Try the following example.

The task is to pass a string as a parameter on onClick function using javascript, we’re going to discuss few techniques. text = "The temperature is " + toCelsius(77) + " Celsius"; The HTML