Javascript:获取用户名列表到控制台/文件 [英] Javascript: Fetch list of usernames to console/file

问题描述

如何使用 javascript 将所有用户名类的内容列表提取到控制台或最好是文件?

.user-id, .username, .user-year { display: inline;}

<div class="user-id">5</div><div class="username">@user1</div><div class="user-year">2018</div><br><div class="user-id">6</div><div class="username">@user2</div><div class="user-year">2015</div><br><div class="user-id">5</div><div class="username">@user3</div><div class="user-year">2012</div>

解决方案

只需使用 querySelectorAll('.username') 选择它们，然后使用 .map textContent:

let users = [...document.querySelectorAll('.username')].map(i => i.textContent)console.log(users)

.user-id, .username, .user-year { display: inline;}

<div class="user-id">5</div><div class="username">@user1</div><div class="user-year">2018</div><br><div class="user-id">6</div><div class="username">@user2</div><div class="user-year">2015</div><br><div class="user-id">5</div><div class="username">@user3</div><div class="user-year">2012</div>

how can I use javascript to fetch a list of the content of all the username class to the console or preferably a file?

.user-id, .username, .user-year { display: inline; }

<div id="#main">
  <div class="user-id">5</div>
  <div class="username">@user1</div>
  <div class="user-year">2018</div>
  <br>
  <div class="user-id">6</div>
  <div class="username">@user2</div>
  <div class="user-year">2015</div>
  <br>
  <div class="user-id">5</div>
  <div class="username">@user3</div>
  <div class="user-year">2012</div>
</div>

解决方案

Just select them using querySelectorAll('.username'), then .map textContent:

let users = [...document.querySelectorAll('.username')].map(i => i.textContent)

console.log(users)

.user-id, .username, .user-year { display: inline; }

<div id="#main">
  <div class="user-id">5</div>
  <div class="username">@user1</div>
  <div class="user-year">2018</div>
  <br>
  <div class="user-id">6</div>
  <div class="username">@user2</div>
  <div class="user-year">2015</div>
  <br>
  <div class="user-id">5</div>
  <div class="username">@user3</div>
  <div class="user-year">2012</div>
</div>

这篇关于Javascript:获取用户名列表到控制台/文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！