simple-math-eval-calc

A simple, small, and alternative code to replace javascript native eval() function.

Purpose

Accept mathematical expression (numerical expressions) based on a string only.

Operations

It currently accepts:

• Addition
• Subtraction
• Multiplication
• Division
• Exponentation

Usage

1. Download the release file.
2. Include src/calc.js by adding it as a script in your HTML file.
3. Use it!

Example

Eval(" 1 + 1"); //returns 2
Eval("10 - 5"); //returns 5
Eval("6 * 2"); //returns 12
Eval("14 / 7"); //returns 2
Eval("2 ^ 2"); //returns 4

How it works

The Eval() function accepts a string

• It is then parsed by the parser,
• then it will be arrange by the transformer,
• and lastly it will be generated,
• and the expression is evaluated.
• Returns the output as a string.

What type of algorithm or notation does it use?

The Eval() uses the Shunting Yard Algorithm and Reverse Polish Notation.

THIS IS THE MIT LICENSED VERSION OF SIMLPLE-MATH-EVAL-CALC