Javascript DOM How to - Change text content

Question

We would like to know how to change text content.

Answer


<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'>
window.onload=function(){<!--from   ww  w .  j av  a 2s .  c  o  m-->
    function replaceTextInClass(className, text) {
        var elms = document.querySelectorAll('.' + className), i;
        for (i = 0; i < elms.length; ++i) {
            elms[i].textContent = text;
        }
    }
    replaceTextInClass('fruit', 'Oranges');
    replaceTextInClass('fish', 'Shark');
}
</script>
</head>
<body>
  Favorite things to eat
  <span class="fruit">Text will appear</span> Things that grow on trees<br/>
  <span class="fruit">Text will appear</span> Dinner<br/>
  <span class="fish">Text will appear</span> Creature in the ocean<br/>
  <span class="fish">Text will appear</span><br/>
</body>
</html>

The code above is rendered as follows: