Question

我正在尝试修改filterCandidateBySkill（）函数，以便仅通过JavaScript技能来过滤候选对象。

我是javascript新手，不熟悉其语法。如果有人可以帮助我，那就太好了：）

    <script type="text/javascript">
const newCandidates = [
  { name: "Reece", skills: ["JavaScript", "Docker", "Java"] },
  { name: "Joanna", skills: ["Python", "Scala"] },
  { name: "Dan", skills: ["JavaScript", "Azure"] },
  { name: "Simone", skills: ["JavaScript", "Java"] },
  { name: "Ned", skills: ["JavaScript", "AWS"] },
  { name: "Yuhi", skills: ["PHP", "JavaScript"] },
  { name: "Jack", skills: ["PHP", ".Net", "C++"] },
];

function removeRowsFromTable(table) {
  const rows = table.getElementsByTagName("tr");

  while (rows.length > 1) {
    table.deleteRow(1);
  }
}

function insertCandidate(tbody, name, skills) {
  const newRow = tbody.insertRow();
  const nameCell = newRow.insertCell();
  const skillCell = newRow.insertCell();

  const candidateName = document.createTextNode(name);
  const candidateSkills = document.createTextNode(skills.join(', '));

  nameCell.appendChild(candidateName);
  skillCell.appendChild(candidateSkills);
}

function addCandidatesToTable(table, candidates) {
  candidates.forEach(candidate => insertCandidate(table, candidate.name, candidate.skills));
}

function filterCandidateBySkill(candidates, skill) {
  // INSERT YOUR LOGIC HERE   <-------------------------

  return candidates;
}

const candidatesTable = document.getElementById("candidates_example");
const newCandidatesTable = candidatesTable.cloneNode(true);

removeRowsFromTable(newCandidatesTable);
const newTbody = newCandidatesTable.getElementsByTagName('tbody')[0];

const filteredCandidates = filterCandidateBySkill(newCandidates, 'JavaScript')
addCandidatesToTable(newTbody, filteredCandidates)

document.body.appendChild(newCandidatesTable);

Answer 1

您可以使用filter()和includes()来获取过滤后的结果。过滤器需要一个返回布尔值的函数，该布尔值指示是否应包含该元素。 includes()传递该布尔值：

const newCandidates = [
    { name: "Reece", skills: ["JavaScript", "Docker", "Java"] },
    { name: "Joanna", skills: ["Python", "Scala"] },
    { name: "Dan", skills: ["JavaScript", "Azure"] },
    { name: "Simone", skills: ["JavaScript", "Java"] },
    { name: "Ned", skills: ["JavaScript", "AWS"] },
    { name: "Yuhi", skills: ["PHP", "JavaScript"] },
    { name: "Jack", skills: ["PHP", ".Net", "C++"] },
  ];

function filterCandidateBySkill(candidates, skill) {
  // INSERT YOUR LOGIC HERE   <-------------------------
 return candidates.filter(cand => cand.skills.includes(skill));
}

console.log(filterCandidateBySkill(newCandidates, 'JavaScript'))

Answer 2

您可以简单地使用Array.prototype.filter()和Array.prototype.includes()来筛选出具有 JavaScript 技能

的候选人

const newCandidates = [
  { name: "Reece", skills: ["JavaScript", "Docker", "Java"] },
  { name: "Joanna", skills: ["Python", "Scala"] },
  { name: "Dan", skills: ["JavaScript", "Azure"] },
  { name: "Simone", skills: ["JavaScript", "Java"] },
  { name: "Ned", skills: ["JavaScript", "AWS"] },
  { name: "Yuhi", skills: ["PHP", "JavaScript"] },
  { name: "Jack", skills: ["PHP", ".Net", "C++"] },
];


function filterCandidateBySkill(candidates, skill) {
  return candidates.filter(candidate=>candidate.skills.includes(skill));
}

console.log(filterCandidateBySkill(newCandidates, 'JavaScript'))

过滤出某个字符串

2 个答案: