Get Element

getElementById()

The getElementById() method returns the first element with the specified id.

document.getElementById(id)

Parameter	Description
`id`	The id of the element to retrieve.

var el = document.getElementById("theId");
alert(el.textContent); // the content of the element

The getElementsByName() method returns an array of all elements with the specified name.

document.getElementsByName(name)

Parameter	Description
`name`	The name of the elements to get.

var arr = document.getElementsByName("name");
alert(arr.length); // the number of elements returned