Beginning JavaScript Vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Array Literals | list values in a pair of square brackets
🗑
|
||||
| Accessing array elements | numbers in array laterals,accessed with[index]
🗑
|
||||
| multi-dimensional arrays | array within an array
🗑
|
||||
| Array Constructor | allows you to add other properties to arrays
🗑
|
||||
| Accessing nested array elements | similar to accessing in one dimensional arrays, except using multiple [index]
🗑
|
||||
| Boolean | true false statement
🗑
|
||||
| Boolean logical operators | ways to put a Boolean into code
🗑
|
||||
| comparison operators | how to compare two things
🗑
|
||||
| code comments | how to explain what functions do
🗑
|
||||
| single line comment | one line of comment
🗑
|
||||
| multi line comment | multiple lines of comment
🗑
|
||||
| console.log | prints text to console useful for debugging
🗑
|
||||
| console.time | allows you to track how long something takes
🗑
|
||||
| console.timeEnd | stops timer
🗑
|
||||
| function | groups code together for easier programming
🗑
|
||||
| function calling | creating a function
🗑
|
||||
| function hoisting | makes function available before needed
🗑
|
||||
| if statement | if something is true, do this, if not, then do not do this
🗑
|
||||
| else statement | fallback to any if statement
🗑
|
||||
| if/else statement | will only run if previous statement was false and this one is true
🗑
|
||||
| for loop | used if you know how many times you need to loop a function
🗑
|
||||
| while loop | used if you don't know how long you need to loop a function
🗑
|
||||
| do while loop | used if you know you need it at least once but not know how many times you need to
🗑
|
||||
| random | RETURNS RANDOM NUMBER BETWEEN ONE AND ZERO
🗑
|
||||
| floor | returns integer less than or equal to a number
🗑
|
||||
| pow | returns base raised to exponent
🗑
|
||||
| ceil | returns smallest integer less than of equal to a number
🗑
|
||||
| PI | returns ratio of the circumference of a cirle to it's diameter
🗑
|
||||
| sqrt | returns square root of a number
🗑
|
||||
| % | returns remainder after left side is divided by right side
🗑
|
||||
| isNAN | returns true if given number is not a number else return false
🗑
|
||||
| basic arithmetic | math
🗑
|
||||
| Prefix and Postfix increment/decrement operators | Prefix increment / decrement operators are operators that first increase the value of the variable by 1 (increment) or decrease the value of an expression / variable by 1 (decrement) and then return this incremented / decremented value. post fix= other
🗑
|
||||
| object literals | objects
🗑
|
||||
| property access | how to access things in code
🗑
|
||||
| classes | organizing similar objects in code
🗑
|
||||
| alert | alert dialogue with an OK button
🗑
|
||||
| confirm | returns true if confirmed
🗑
|
||||
| prompt | displays optional message
🗑
|
||||
| string | combining two things in code
🗑
|
||||
| length | returns length of string
🗑
|
||||
| toUpperCase/toLowerCase | returns opposite font
🗑
|
||||
| trim | deletes empty space of both ends of string
🗑
|
||||
| replace | returns a string with the first match sub-string is replaced with a new string
🗑
|
||||
| charAT | returns specific character from string
🗑
|
||||
| substring | returns sequence of characters between two indices within a string
🗑
|
||||
| indexOF | Returns the index within the calling String object of the first occurrence of the specified value, starting the search at fromIndex, Returns -1 if the value is not found. The indexOf method is case sensitive
🗑
|
||||
| switch | big if/else statement
🗑
|
||||
| ternary operator | The ternary operator is usually used as a shortcut for the if statement.
🗑
|
||||
| variable assignment | assigning a variable
🗑
|
||||
| variable changing | changing a variable
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
bnorte98
Popular Computers sets