Skip to main content

JavaScript Syntax

Javascript language is case sensitive which means that it strictly operates within a declared and predefined set of rules. A javascript syntax is something that should be exactly as it is in a written statement.

For example:

var x, y, z; //declaration
x = 10;  //Assignment
y = x;
z = x/y;   //operator operation
  • Any variable which is declared must be with the keywords var, let, and const.
  • An equal sign represents that it has been assigned a value.
  • Always use the precise keyword as it is defined already.
  • We cannot define VAR or Const or LEt like this as it will throw an error and simply won't interpret it to its default keyword.
  • As we said javascript is case sensitive which means you got to give the exact variable with the respective name without altering its keyword.
  • Javascript follows the Unicode character set which sort of covers almost all the characters, punctuations, and symbols in the world.
  • We cannot use hyphens in a javascript syntax as it is reserved for subtractions.

Javascript CamelCase:

  • We have upper camel case or otherwise called pascal case¬†
FirstName, LastName, MasterCard
  • The lower camel case tends to start with a lowercase letter and the second word starts with uppercase.
firstName, lastName, masterCard

Literals:

  • In javascript just like any other language, numbers are written with or without decimals.
20.66
2066
  • Strings can be written within both double and single quotes.
"Rob"
'Rob'

Operators:

  • Javascript uses arithmetic operator(+-/%^) to compute values and arithmetic operations.
(5/10)*50
  • It uses an assignment operator(=) to assign values to the variable.
Tags
Submitted by arilio666 on September 13, 2021

Ashwin is working with iVagus as a Technical Lead. He has experience in various technologies like Cypress, JavaScript, TypeScript, Rest Assured, Selenium, Cucumber, and Java.

About

At ProgramsBuzz, you can learn, share and grow with millions of techie around the world from different domain like Data Science, Software Development, QA and Digital Marketing. You can ask doubt and get the answer for your queries from our experts.