cione-comp-lib
Version:
`$ yarn add cione-comp-lib` 或者 `$ npm i cione-comp-lib -S`
9 lines (8 loc) • 362 B
JavaScript
var MAX_SAFE_INTEGER = 9007199254740991;
var reIsUint = /^(?:0|[1-9]\d*)$/;
function isIndex(value, length) {
var type = typeof value;
length = length == null ? MAX_SAFE_INTEGER : length;
return !!length && (type == "number" || type != "symbol" && reIsUint.test(value)) && (value > -1 && value % 1 == 0 && value < length);
}
export { isIndex as default };