/
array_keys.js
37 lines (33 loc) · 1.04 KB
/
array_keys.js
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module.exports = function array_keys(input, searchValue, argStrict) {
// discuss at: https://locutus.io/php/array_keys/
// original by: Kevin van Zonneveld (https://kvz.io)
// input by: Brett Zamir (https://brett-zamir.me)
// input by: P
// bugfixed by: Kevin van Zonneveld (https://kvz.io)
// bugfixed by: Brett Zamir (https://brett-zamir.me)
// improved by: jd
// improved by: Brett Zamir (https://brett-zamir.me)
// example 1: array_keys( {firstname: 'Kevin', surname: 'van Zonneveld'} )
// returns 1: [ 'firstname', 'surname' ]
const search = typeof searchValue !== 'undefined'
const tmpArr = []
const strict = !!argStrict
let include = true
let key = ''
for (key in input) {
if (input.hasOwnProperty(key)) {
include = true
if (search) {
if (strict && input[key] !== searchValue) {
include = false
} else if (input[key] !== searchValue) {
include = false
}
}
if (include) {
tmpArr[tmpArr.length] = key
}
}
}
return tmpArr
}