title: Increase/decrease textfield value with javascript
body: <p>I'm having trouble in doing a javascript that will do the following:</p>
  
  <p>Increase/decrease number inside textbox when image clicked.
  setting a limit for that textbox (not below zero, not above x)</p>
  
  <p>please know i have many text boxes in the same page, so how can this issue be fixed?</p>
  
  <p><img src="https://i.stack.imgur.com/Qm4YZ.jpg" alt="Image for illustration"></p>