upload file html and show it on img tag code example

Example 1: how to upload image in html

<form action="/action_page.php">
  <label for="img">Select image:</label>
  <input type="file" id="img" name="img" accept="image/*">
  <input type="submit">
</form>

Example 2: image upload in html

<form action="http://jkorpela.fi/cgi-bin/echo.cgi"
enctype="multipart/form-data" method="post">
<p>
Type some text (if you like):<br>
<input type="text" name="textline" size="30">
</p>
<p>
Please specify a file, or a set of files:<br>
<input type="file" name="datafile" size="40">
</p>
<div>
<input type="submit" value="Send">
</div>
</form>