ut2/es/get.js

一个现代 JavaScript 实用工具库。[点击查看在线文档]。

import { nativeUndefined } from './internals/native.js';
import isNil from './isNil.js';
import isUndefined from './isUndefined.js';
import toPath from './toPath.js';

function baseGet(object, key) {
    var paths = toPath(key, object);
    var length = paths.length;
    var index = 0;
    while (!isNil(object) && index < length) {
        object = object[paths[index++]];
    }
    return index && index === length ? object : nativeUndefined;
}
function get(object, key, defaultValue) {
    var result = isNil(object) ? nativeUndefined : baseGet(object, key);
    return isUndefined(result) ? defaultValue : result;
}

export { get as default };