program structure Flashcards
A fragment of code that produces a value is called an _________.
expression
If an expression corresponds to a sentence fragment, a JavaScript _________ corresponds to a full sentence.
statement
To catch and hold values, JavaScript provides a thing called a _______, or variable
binding
let caught = 5 * 5; which in the sentence is a binding?
caught
After a binding has been defined, its name can be used as an ____________.
expression
Bindings or variable names can start with numbers. T/F
false
Bindings can include numbers. T/F
true
Bindings can include the $ sign. T/F
true
Bindings can not include the _ sign. T/F
false
Bindings can’t use any punctuation and special characters other than $ and _. T/F
true
The collection of bindings and their values that exist at a given time is called the __________.
environment
A _______ is a piece of program wrapped in a value.
function
Values given to functions are called __________.
arguments
Executing a function is called ______, ______, or ______ it.
invoking, calling, or applying
When a function produces a value, it is said to _______ that value.
return
Not all programs are straight roads. We may, for example, want to create a branching road, where the program takes the proper branch based on the situation at hand. This is called _________ ____________.
conditional execution
Conditional execution is created with the _____ keyword in JavaScript.
if
A statement starting with the keyword _______ creates a loop.
while
A ___ _____ always executes its body at least once, and it starts testing whether it should stop only after that first execution.
do loop
let yourName;
do {
yourName = prompt("Who are you?");
} while (!yourName);
console.log(yourName);
The parentheses after a for keyword must contain two semicolons. The part before the first semicolon ______ the loop, usually by defining a binding. The second part is the expression that ________ whether the loop must continue. The final part _______ the state of the loop after every iteration.
initializes
checks
updates
what does "break" do in the following code:
for (let current = 20; ; current = current + 1) {
if (current % 7 == 0) {
console.log(current);
break;
}
}break that has the effect of immediately jumping out of the enclosing loop
When ___________ is encountered in a loop body, control jumps out of the body and continues with the loop’s next iteration.
continue
What is the shortcut for:
counter = counter + 1;
counter += 1;
or
counter++;
Instead of a long sequence of if statements on a binding, a _______ statement can be used instead.
switch
Single line comments are made with?
//
Multiple line comments begin with __ and end with __.
/* */
