mathjs/docs/reference/functions/print.md

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices.

# Function print

Interpolate values into a string template.


## Syntax

```js
math.print(template, values)
math.print(template, values, precision)
```

### Parameters

Parameter | Type | Description
--------- | ---- | -----------
`template` | String | A string containing variable placeholders.
`values` | Object | An object containing variables which will be filled in in the template.
`precision` | Number | Number of digits to format numbers. If not provided, the value will not be rounded.

### Returns

Type | Description
---- | -----------
String | Interpolated string


## Examples

```js
// the following outputs: 'Lucy is 5 years old'
math.print('Lucy is $age years old', {age: 5});

// the following outputs: 'The value of pi is 3.141592654'
math.print('The value of pi is $pi', {pi: math.pi}, 10);

// the following outputs: 'hello Mary! The date is 2013-03-23'
math.print('Hello $user.name! The date is $date', {
  user: {
    name: 'Mary',
  },
  date: new Date(2013, 2, 23).toISOString().substring(0, 10)
});
```


## See also

[format](format.md)


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