Five methods for calling functions using JavaScript

Again and again, I found that Javascript code with bugs is caused by failing to really understand how Javascript Functions work (by the way, I wrote a lot of such code ). javaScript has the feature of functional programming. When we choose to face it, this will become me... syntaxHighlighter. a

Again and again, I found that Javascript code with bugs is caused by failing to really understand how Javascript Functions work (by the way, I wrote a lot of such code ). javaScript has the feature of functional programming. When we choose to face it, this will become the obstacle for us to move forward.
As a beginner, We will test five function call methods. On the surface, we will think that those functions are very similar to those in C, however, we can see that there are still very important differences. Ignoring these differences will undoubtedly lead to bugs that are difficult to track. First, let's create a simple function. this function will be used later. this function only returns the current value of this and the two provided parameters.