javascript - 如何在 JavaScript 中迭代对象的特定键？

Question

我有一个对象，我想遍历该对象的一些特定键。如何实现？

考虑下面的片段:

我如何遍历 table1、table2 和 table3 键而不是全部？

var table_object = {
  table1: "hello world",
  table1_name: "greetings_english.html",
  table2: "hola",
  table2_name: "greetings_spanish.html",
  table3: "Bonjour",
  table3_name: "greetings_french.html"
};

Answer 1

您可以过滤键，然后迭代其余键。

var table_object = { table1: "hello world", table1_name: "greetings_english.html", table2: "hola", table2_name: "greetings_spanish.html", table3: "Bonjour", table3_name: "greetings_french.html" };

Object
    .keys(table_object)
    .filter(function (k) { return !/_/.test(k); })
    .forEach(function (k) { console.log(table_object[k]); });