<pre class="shiki github-dark shaku"><code>/** * @param {object} source * @param {string | string[]} path * @param {any} [defaultValue] * @return {any} */function get(source, path, defaultValue = undefined) { // 1. normalize the path into array notation // 2. get the result layer by layer const segs = Array.isArray(path) ? path : path.split(/[\.\[\]]+/g) if (segs[segs.length - 1] === '') { segs.pop() } if (segs.length === 0) { return defaultValue } let result = source while (result &amp;&amp; segs.length &gt; 0) { let head = segs.shift() result = result[head] } return result === undefined ? defaultValue : result}</code></pre>

This is my Solution !

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_.get(object, path, [defaultValue]) is a handy method to help retrieving data from an arbitrary object. if the resolved value from path is undefined, …