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<noob />
17,062 Pointshow the teacher added sarah for example to the classrom set if he didnt declared sarah?
It's not an array of objects, i don't understand how he did it and why it's valid. another question is the syntax of the if statements where is the {}?
2 Answers
Steven Parker
231,275 PointsThe variable "sarah" is declared in the big "let" statement. When items are separated by a comma, it's just like each one was a separate statement with "let" in front of it.
And an "if" can control either a code block (surrounded by braces), or a single statement. The braces aren't needed when the "if" is controlling a single statement.
<noob />
17,062 PointsIt’s new to es6? another thing i want to ask is how i continue from here. i decided to do the full stack js track first and then the front end because i find it more interesting. i did all the courses until dom manipulation. we didn’t had any major projects in the new es6 syntax. i also want to be do some algo challenges which i don’t find a lot in the js track like in the python track for example.
Steven Parker
231,275 Points"Let" is new with ES6, but declaring more than one thing at a time using commas is not (it just used to be "var" you would do it with).
There's lots of third-party challenge sites for more practice. One I've used is "codewars".