javascript - 数组不迭代值，只迭代数组名称

Question

我知道这是基本的，但是，我正在尝试迭代随机选择的数组的内容。此 JavaScript 返回随机数组的名称，但不列出其内容。任何帮助都会有用。

<script language="javascript" type="text/javascript">
var intros = ['introOne', 'introTwo'];

var opening = intros[Math.floor(Math.random() * intros.length)];

var introOne = [
    '<img src="assets/redOne.jpg">',
    '<img src="assets/redTwo.jpg">',
    '<img src="assets/redThree.jpg>'];

var introTwo = [
  '<img src="assets/rblueOne.jpg">',
    '<img src="assets/rblueTwo.jpg">',
    '<img src="assets/blueThree.jpg>'];


for (var i=0; i<opening.length; i++) {
  document.write(opening[i]);


}

</script>

Answer 1

引用数组名称时不要引用它们。

var introOne = [
  '<img src="assets/redOne.jpg">',
  '<img src="assets/redTwo.jpg">',
  '<img src="assets/redThree.jpg">'
];

var introTwo = [
  '<img src="assets/rblueOne.jpg">',
  '<img src="assets/rblueTwo.jpg">',
  '<img src="assets/blueThree.jpg">'
];

var intros = [introOne, introTwo];

var opening = intros[Math.floor(Math.random() * intros.length)];

for (var i = 0; i < opening.length; i++) {
  document.write(opening[i]);
}