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function: indexOf


indexOf(array: Array, value: *, fromIndex: number): number

Gets the index at which the first occurrence of `value` is found in `array` using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) for equality comparisons. If `fromIndex` is negative, it's used as the offset from the end of `array`.

Example(s):

indexOf([1, 2, 1, 2], 2)
// => 1

// Search from the `fromIndex`.
indexOf([1, 2, 1, 2], 2, 2)
// => 3

Params:

Name Type Attribute Description
array The array to inspect.
value The value to search for.
fromIndex The index to search from.

Returns:

number

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    "comment": "/**\r\n * Gets the index at which the first occurrence of `value` is found in `array`\r\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\r\n * for equality comparisons. If `fromIndex` is negative, it's used as the\r\n * offset from the end of `array`.\r\n *\r\n * @since 0.1.0\r\n * @category Array\r\n * @param {Array} array The array to inspect.\r\n * @param {*} value The value to search for.\r\n * @param {number} [fromIndex=0] The index to search from.\r\n * @returns {number} Returns the index of the matched value, else `-1`.\r\n * @example\r\n *\r\n * indexOf([1, 2, 1, 2], 2)\r\n * // => 1\r\n *\r\n * // Search from the `fromIndex`.\r\n * indexOf([1, 2, 1, 2], 2, 2)\r\n * // => 3\r\n */",
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        }
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    "description": "Gets the index at which the first occurrence of `value` is found in `array`\rusing [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\rfor equality comparisons. If `fromIndex` is negative, it's used as the\roffset from the end of `array`.",
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