Answers for "getelementsbyclassname add text before"

js document.getelementsbyclassname modify innertext

<body>

<p class="demo">JavaScript can change the content of an HTML element.</p>    
<p class="demo">Yolo</p>   

<button type="button" onclick="myFunction()">Click Me!</button>

<script>        
function myFunction()
{
x=document.getElementsByClassName("demo");  // Find the elements
    for(var i = 0; i < x.length; i++){
    x[i].innerText="Hello JavaScript!";    // Change the content
    }

}

</script>
</body>

Posted by: Guest on March-25-2020

Source

getelementsbyclassname add class

.newclassname {   border: 16px solid black; /* Light grey */
  border-top: 16px solid black; /* Blue */
  border-radius: 50%;
  width: 120px;
  height: 120px;
  animation: spin 2s linear infinite; }
  @keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}

Posted by: Guest on April-07-2021

Source