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43 lines
1.2 KiB
43 lines
1.2 KiB
var root = require('./_root'), |
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toString = require('./toString'); |
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/** Used to match leading whitespace. */ |
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var reTrimStart = /^\s+/; |
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/* Built-in method references for those with the same name as other `lodash` methods. */ |
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var nativeParseInt = root.parseInt; |
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/** |
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* Converts `string` to an integer of the specified radix. If `radix` is |
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* `undefined` or `0`, a `radix` of `10` is used unless `value` is a |
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* hexadecimal, in which case a `radix` of `16` is used. |
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* |
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* **Note:** This method aligns with the |
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* [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`. |
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* |
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* @static |
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* @memberOf _ |
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* @since 1.1.0 |
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* @category String |
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* @param {string} string The string to convert. |
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* @param {number} [radix=10] The radix to interpret `value` by. |
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* @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. |
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* @returns {number} Returns the converted integer. |
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* @example |
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* |
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* _.parseInt('08'); |
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* // => 8 |
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* |
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* _.map(['6', '08', '10'], _.parseInt); |
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* // => [6, 8, 10] |
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*/ |
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function parseInt(string, radix, guard) { |
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if (guard || radix == null) { |
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radix = 0; |
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} else if (radix) { |
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radix = +radix; |
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} |
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return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0); |
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} |
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module.exports = parseInt;
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