JavaScript has numerous operators that can be used, in part, to do mathematical calculations, assign values to variables, and compare values.
Below are just a few examples of these operators. After each section there is a link to a reference page for each, showing the complete list of operators and how they are used.
Arithmetic Operators
JavaScript arithmetic operators are used to perform arithmetic between variables and/or values.
let x = 3 + 2; // answer: 5
let x = 3 - 2; // answer: 1
let x = 3 * 2; // answer: 6
let x = 3 / 2; // answer: 1.5
Assignment Operators
JavaScript assignment operators are used to assign values to variables.
let x = y; // x will equal y
let x += y; // same as x = x + y
Comparison Operators
JavaScript comparison operators are used in logical statements to determine equality or inequality between variables and/or values.
x == 8 // determines if x is equal to 8
x != 8 // determines if x is NOT equal to 8
x > 8 // determines if x is greater than 8
x <= 8 // determines if x is less than or equal to 8
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.
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JAVASCRIPT NOTES:
- When using JavaScript, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- JavaScript is a case-sensitive language; firstName is NOT the same as firstname
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
- JavaScript variables must begin with a letter, $, or _
- JavaScript variables are case sensitive (x is not the same as X)
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