javascript - 如何使用 startsWith 过滤并获取每个对象键的值？

Question

我试图通过获取以 checkpoint 开头的每个键并输出其值来过滤对象。目前，我只能输出键而不是值。下面，我有一个简单的对象。我正在使用过滤器和 startsWith。我怎样才能获取这些值？

var data = {
  practicals: '0',
  checkpoint01: '0',
  checkpoint02: '0',
  checkpoint03: '0',
  checkpoint04: '0',
  checkpoint05: '0',
  checkpoint06: '0',
  checkpoint07: '0',
  checkpoint08: '0',
  checkpoint09: '0',
  checkpoint10: '0',
  total: '0'
}

var res = Object.keys(data).filter(v => v.startsWith('checkpoint'))

console.log(res)

// This is the current output: ["checkpoint01", "checkpoint02", "checkpoint03", "checkpoint04", "checkpoint05", "checkpoint06", "checkpoint07", "checkpoint08", "checkpoint09", "checkpoint10"]

// This is the expected output I want: [ '0', '0', '0', '0', '0', '0', '0', '0', '0', '0' ]

Answer 1

使用 Array.prototype.map 和 data 变量。

var data = {
  practicals: '0',
  checkpoint01: '0',
  checkpoint02: '0',
  checkpoint03: '0',
  checkpoint04: '0',
  checkpoint05: '0',
  checkpoint06: '0',
  checkpoint07: '0',
  checkpoint08: '0',
  checkpoint09: '0',
  checkpoint10: '0',
  total: '0'
}

var res = Object.keys(data).filter(v => v.startsWith('checkpoint')).map(e => data[e])

console.log(res)