How to get button value using Javascript

Question

I am trying to figure out how to get the value of a button using JavaScript. There are several buttons generated using a while statement in php code, so the name an

Answer 1

try something like

<script type="text/javascript">
  function getVal(value)
  {

   alert(value);
  }
 </script>
 <input type="button" value="Add" onclick="getVal(this.value)">

Answer 2

Note that using the same id for more than one element is invalid html, though most (all?) browsers tend not to make a fuss about it and they'll still display the page quite happily. That's why when you tried to use document.getElementById("details") it always gave you the first button with that id - how would the browser know which one you meant?

Having said that, if you pass this in the function call on click:

onClick=\"MCNdetails(this)\"

...that will give the function a direct reference to the particular button that was clicked. So then:

function MCNdetails(btn) {
    var buttonValue = btn.value;

    // etc
}

In which case your buttons don't really need ids at all. But if you do keep the ids you should find a way to make them unique (e.g., append a sequence number to the end of each).