docs/api/javascript/control-structures/expr.md at master · rethinkdb/docs

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layout api-command
language JavaScript
permalink api/javascript/expr/
command expr
io

r

value

Command syntax

{% apibody %} r.expr(value) → value {% endapibody %}

Description

Construct a ReQL JSON object from a native object.

If the native object is a Node.js Buffer, then expr will return a binary object. See binary for more information.

Example: Objects wrapped with expr can then be manipulated by ReQL API functions.

r.expr({a:'b'}).merge({b:[1,2,3]}).run(conn, callback)

Example: In JavaScript, you can also do this with just r.

r({a: 'b'}).merge({b: [1,2,3]}).run(conn, callback)