BlogPost 202 Javascript!

The thing I most enjoyed learning in class today was how to think through a problem like with coding the tictactoe. Working through it on the whiteboard, then in pseudo code, and finally in real code helps me understand how to break things down into small steps and get there piece by piece.

“Use strict” is a way of signaling that you want strict adherence to javascript rules, such as not allowing unnamed variables. It is useful, especially when dealing with a lot of code, as it can keep you from getting sidetracked trying to track down small mistakes that were able to slip by if you don’t use the “use strict” expression.

Hoisting is Javascript’s default behavior of moving all declarations to the top of the script. This means variables declared after functions can be used in them.

Standards bodies publish the standards regarding documentation and language usage that make web developers’ jobs much easier. Without standards, it can become much more difficult to understand the code of others, as there isn’t a set of standards by which things should be written.

The two best ways I have increased the maintainability of my code is by solving the problem and coding it, and then going back and seeing if there is a more efficient way to do so requiring less code. The other is by being careful to declare my variables with const when appropriate.

It is possible to extend javascript built-in functions by using prototype. Prototype lets us insert our custom functions into a JS object. An example of a a built-in function is .slice(). If you extend built-in functions it can cause problems down the line if javascript adds its own function similar to what you have built, or if you modify current ones it breaks their behavior and can make it difficult for other people to troubleshoot your code.

Global scope effects all the code that follows it on individual pages, so variables that you can’t see locally can be effecting your code, without an easy way to see and troubleshoot them. You are likely to encounter global variable name clashes, and it can appear as a corner-cutting attempt that makes future work much more difficult.

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