JSFiddle - React, Tailwind, and code Playground

http://stackoverflow.com/questions/38671598/populating-data-from-an-html-table-row/38671666#38671666

HTML

<table>
<tr>
  <td><input class='m_id' value='123' /></td>
  <td><button type="button" onclick="view_message(this);">click</button></td>
</tr>
<tr>
  <td><input class='m_id' value='456' /></td>
  <td><button type="button" onclick="view_message(this);">click</button></td>
</tr>
<tr>
  <td><input class='m_id' value='789' /></td>
  <td><button type="button" onclick="view_message(this);">click</button></td>
</tr>
</table>

JavaScript

function view_message(el) {
    var row = $(el).closest("tr");
    alert($(".m_id", row).val())
}