JS-从数组设置表单输入字段的样式

Question

If i have saved all the fields in a form to an array,

var reqfield = document.getElementsByClassName("req");

how can i set the css style of a single field based on said array.

document.getElementById("myform")reqfield[1].style.backgroundColor = "red";

Answer 1

You've already got the item stored in the array. It should just be

reqfield[1].style.backgroundColor = "red";