Function evaluate #
Evaluate an expression.
Note the evaluating arbitrary expressions may involve security risks,
see https://mathjs.org/docs/expressions/security.html for more information.
Syntax #
math.evaluate(expr)
math.evaluate(expr, scope)
math.evaluate([expr1, expr2, expr3, ...])
math.evaluate([expr1, expr2, expr3, ...], scope)
Parameters #
| Parameter |
Type |
Description |
expr |
string | string[] | Matrix |
The expression to be evaluated |
scope |
Object |
Scope to read/write variables |
Returns #
| Type |
Description |
| * |
The result of the expression |
Throws #
Examples #
math.evaluate('(2+3)/4') // 1.25
math.evaluate('sqrt(3^2 + 4^2)') // 5
math.evaluate('sqrt(-4)') // 2i
math.evaluate(['a=3', 'b=4', 'a*b']) // [3, 4, 12]
let scope = {a:3, b:4}
math.evaluate('a * b', scope) // 12
See also #
parse,
compile
