- Tags: JS Operator, Math
- Categories: JavaScript Operators, JavaScript Reference, Reference
Quick Reference
JavaScript comparison operators are used in logical statements to determine equality or inequality between variables and/or values.
Equal To
x == 8 // determines if x is equal to 8
Equal Value and Equal Type
x === 8 // determines if x is equal to 8 and is the same data type (8 not "8")
Not Equal To
x != 8 // determines if x is NOT equal to 8
Not Equal Value OR Not Equal Type
x !== 8 // determines if x is NOT equal to 8 OR is NOT the same data type (8 not "8")
Greater Than
x > 8 // determines if x is greater than 8
Less Than
x < 8 // determines if x is less than 8
Greater Than OR Equal To
x >= 8 // determines if x is greater than or equal to 8
Less Than OR Equal To
x <= 8 // determines if x is less than or equal to 8
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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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