後來在ES5 新增了 Object.keys() ，終於可以擺脫 for-in 陳述句了，終於可以讓JS 物件(間接) 使用Array method 了！ Object.keys() 可直接取得 ... ... <看更多>

This can be done with a simple reduce call: // Demo data var source = ['someValue1', 'someValue2', 'someValue3', 'other4', ... ... <看更多>

const propertyNames = Object.keys(person); console.log(propertyNames); · [ 'firstName', 'lastName' ] · const propertyValues = Object.values(person); console. · [ ' ... ... <看更多>

Here is possibly an even more functional programming style solution, which makes use of a temporary ES6 Map object. This has the advantage over a plain ... ... <看更多>

JS arrayToObj(): convert array to object with a key-value map function - array-to-object.js. ... <看更多>

This video covers three Object methods - keys( ), values( ) and entries( ).All three methods will create an ... ... <看更多>