javascript get element by classname code example
Example 1: javascript get element by class
var elementsArray = document.getElementsByClassName("someclassname");
Example 2: how to get element by class name javascript
document.getElementsByClassName("legend").style.display="none";
Example 3: get elment by id within get element byclassname
var targetDiv = document.getElementById("foo").getElementsByClassName("bar")[0];
targetDiv.textContent = "Goodbye world!";