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39 lines
1.0 KiB
39 lines
1.0 KiB
var createPadding = require('./_createPadding'), |
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stringSize = require('./_stringSize'), |
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toInteger = require('./toInteger'), |
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toString = require('./toString'); |
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/** |
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* Pads `string` on the left side if it's shorter than `length`. Padding |
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* characters are truncated if they exceed `length`. |
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* |
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* @static |
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* @memberOf _ |
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* @since 4.0.0 |
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* @category String |
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* @param {string} [string=''] The string to pad. |
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* @param {number} [length=0] The padding length. |
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* @param {string} [chars=' '] The string used as padding. |
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* @returns {string} Returns the padded string. |
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* @example |
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* |
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* _.padStart('abc', 6); |
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* // => ' abc' |
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* |
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* _.padStart('abc', 6, '_-'); |
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* // => '_-_abc' |
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* |
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* _.padStart('abc', 3); |
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* // => 'abc' |
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*/ |
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function padStart(string, length, chars) { |
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string = toString(string); |
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length = toInteger(length); |
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var strLength = length ? stringSize(string) : 0; |
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return (length && strLength < length) |
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? (createPadding(length - strLength, chars) + string) |
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: string; |
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} |
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module.exports = padStart;
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