disable field in javascript code example

Example 1: javascript disable input

//javascript disable
document.getElementById("id").disabled = true;
//javascript enable
document.getElementById("id").disabled = false;

//jquery disable
$('#id').attr("disabled", true);
//enable
$('#id').attr("disabled", false);

Example 2: disable input box javascript

document.getElementById("myText").disabled = true;// <input id = "myText"/>