Comparison and Logical operators are used to test for true or false.
Comparison operators are used in logical statements to determine equality or difference between variables or values.
Given that x=5, the table below explains the comparison operators:
|==||is equal to||x==8||false||Try it »|
|x==5||true||Try it »|
|===||is exactly equal to (value and type)||x==="5"||false||Try it »|
|x===5||true||Try it »|
|!=||is not equal||x!=8||true||Try it »|
|!==||is not equal (neither value nor type)||x!=="5"||true||Try it »|
|x!==5||false||Try it »|
|>||is greater than||x>8||false||Try it »|
|<||is less than||x<8||true||Try it »|
|>=||is greater than or equal to||x>=8||false||Try it »|
|<=||is less than or equal to||x<=8||true||Try it »|
Comparison operators can be used in conditional statements to compare values and take action depending on the result:
You will learn more about the use of conditional statements in the next chapter of this tutorial.
Logical operators are used to determine the logic between variables or values.
Given that x=6 and y=3, the table below explains the logical operators:
|&&||and||(x < 10 && y > 1) is true|
|||||or||(x==5 || y==5) is false|
|!||not||!(x==y) is true|
If the variable age is a value below 18, the value of the variable voteable will be "Too young, otherwise the value of voteable will be "Old enough":
The perfect solution for professionals who need to balance work, family, and career building.
More than 10 000 certificates already issued!
The HTML Certificate documents your knowledge of HTML.
The HTML5 Certificate documents your knowledge of advanced HTML5.
The CSS Certificate documents your knowledge of advanced CSS.
The jQuery Certificate documents your knowledge of jQuery.
The XML Certificate documents your knowledge of XML, XML DOM and XSLT.
The ASP Certificate documents your knowledge of ASP, SQL, and ADO.
The PHP Certificate documents your knowledge of PHP and SQL (MySQL).
Your message has been sent to W3Schools.