If we create a variable within a block of code, it is scoped to that block. This is different than in C#. Code blocks are marked with curly braces ( { } ). So a function has a block of code because it uses curly braces to define it. Let’s
We have sent values to a function, but what about getting information back? All functions return to the location from which they are called and they return data using the “return” keyword. If you do not use the “return” keyword, the function will return “undefined”. Happy Coding! Clay Hess
When you write JavaScript applications, you will write a lot of functions. Functions in JavaScript are like methods in C#. You will learn various ways to write JavaScript functions. Here is one of the more common ways… The aforementioned code does not run the function. It simply declares it. As
Just like in C#, JavaScript utilizes conditional, control-flow statements. One of the most common is the IF statement. IF statements evaluate Boolean statements…greater than, less than, etc. Equal/Not equal is another evaluation statement. In JavaScript, there are two ways to work with equal/not equal. You can utilize two or three
Splice Splice allows us to remove items based upon their index position and can remove multiple items. If we run the following code with our baseball array… The console will report ‘Aaron’, ‘Ruth’, ‘Uecker’ because we asked the splice operation to start at index position 2, which was ‘Wagner’ and
Shift Shift allows us to remove the first item in the array. It works similar to pop. Consider the following code from our baseball array we have been using… The output will be ‘Ruth’, ‘Wagner’, ‘Uecker’. It basically removes the item and shifts everything over. There might be times you
