Changing input border with Javascript

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#1 by (3 votes)

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What's wrong? I need this effect to validate form.

var input = document.getElementByClass("dado");
input.style.border = "1px solid red";

javascript html5 css3

asked by anonymous 21.12.2016 / 18:30

1 answer

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score 3 · Answer 1

You're using the wrong getElementsByClassName . And the return is an array, so it should be accessed by the index:

var input = document.getElementsByClassName("dado");
input[0].style.border = "2px solid red";

<input class="dado" />