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var baseClamp = require('./_baseClamp'), | |
baseToString = require('./_baseToString'), | |
toInteger = require('./toInteger'), | |
toString = require('./toString'); | |
/** | |
* Checks if `string` starts with the given target string. | |
* | |
* @static | |
* @memberOf _ | |
* @since 3.0.0 | |
* @category String | |
* @param {string} [string=''] The string to inspect. | |
* @param {string} [target] The string to search for. | |
* @param {number} [position=0] The position to search from. | |
* @returns {boolean} Returns `true` if `string` starts with `target`, | |
* else `false`. | |
* @example | |
* | |
* _.startsWith('abc', 'a'); | |
* // => true | |
* | |
* _.startsWith('abc', 'b'); | |
* // => false | |
* | |
* _.startsWith('abc', 'b', 1); | |
* // => true | |
*/ | |
function startsWith(string, target, position) { | |
string = toString(string); | |
position = position == null | |
? 0 | |
: baseClamp(toInteger(position), 0, string.length); | |
target = baseToString(target); | |
return string.slice(position, position + target.length) == target; | |
} | |
module.exports = startsWith; | |