有時要將JS 物件轉成其他資料結構，所以需要迭代物件中的所有property，過去會用for-in 陳述句，但只想列舉own property，就必須用hasOwnProperty() ... ... <看更多>

How to get value in an object's key using a variable referencing that key? javascript. I have an object and I can reference key a as in the ... ... <看更多>

return Object.keys(object).map(function (key, value) { return [key, value].join(glue); }).join(separator);. } var options = { id : 1, name : 'lucas', ... ... <看更多>

entries() . Note that the Object.keys() method has been available since ECMAScript 2015 or ES6, and the Object.values() and ... ... <看更多>