What's the difference between VAR and let?

What's the difference between VAR and let?

var and let are both used for variable declaration in javascript but the difference between them is that var is function scoped and let is block scoped. It can be said that a variable declared with var is defined throughout the program as compared to let.

Can you do math in HTML?

The element is used to include math expressions in the current line. HTML math is powerful enough to describe the range of math expressions you can create in common word processing packages, as well as being suitable for rendering to speech.

Which tag is used to write mathematical formulas in HTML?

MathML

How do you calculate in HTML?

  1. Definition and Usage. The tag is used to represent the result of a calculation (like one performed by a script).
  2. Browser Support. The numbers in the table specify the first browser version that fully supports the element. ...
  3. Attributes. Attribute. ...
  4. Global Attributes. ...
  5. Event Attributes. ...
  6. Related Pages.

How do I type math symbols in HTML?

Many mathematical, technical, and currency symbols, are not present on a normal keyboard. To add such symbols to an HTML page, you can use the entity name or the entity number (a decimal or a hexadecimal reference) for the symbol.

What does infinity symbol denotes html5?

Advanced Mathematical and Technical Characters.
CharacterEntity NameEntity Number

What is &# in HTML?

An HTML entity is a piece of text ("string") that begins with an ampersand ( & ) and ends with a semicolon ( ; ) ....Reserved characters.
CharacterEntityNote
&&Interpreted as the beginning of an entity or character reference.