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title: Disallow Calling Global Object Properties as Functions (no-obj-calls)
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# Disallow Calling Global Object Properties as Functions (no-obj-calls)

Prevents calling the `Math`, `JSON`, and `Reflect` global objects as though they were functions. For example, `Math()` is disallowed. This follows the ECMAScript 5 specification. This is a standard rule built into ESLint.

For complete details about this rule, including examples, see the corresponding ESLint documentation, [disallow calling global object properties as functions (no-obj-calls)](https://eslint.org/docs/rules/no-obj-calls).