File: DOMTokenList-value.html

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<!DOCTYPE html>
<meta charset="utf-8">
<title>DOMTokenList value</title>
<link rel=help href="https://dom.spec.whatwg.org/#dom-domtokenlist-value">
<link rel=author title=Tangresh href="mailto:dmenzi@tangresh.ch">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<span class="   a  a b "></span>
<script>
test(function() {
  assert_equals(String(document.createElement("span").classList.value), "",
                "classList.value should return the empty list for an undefined class attribute");
  var span = document.querySelector("span");
  assert_equals(span.classList.value, "   a  a b ",
                "value should return the literal value");
  span.classList.value = " foo bar foo ";
  assert_equals(span.classList.value, " foo bar foo ",
                "assigning value should set the literal value");
  assert_equals(span.classList.length, 2,
                "length should be the number of tokens");
  assert_class_string(span.classList, "DOMTokenList");
  assert_class_string(span.classList.value, "String");
});
</script>