html input different value and text code example

Example 1: javascript set input field value

document.getElementById("myInputID").value = "My Value"; //set value on myInputID

Example 2: how to change input value in javascript using class

// Find the input element with a class of "bar" that is a direct child of a form with a name attribute of "foo"
document.querySelector("form[name='foo'] > input.bar").value = "hehe works"