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<html>
<head>
<title>Collections</title>
<script>
const JS_HAS_SYMBOLS = typeof Symbol === "function";
const ITERATOR_SYMBOL = JS_HAS_SYMBOLS ? Symbol.iterator : "@@iterator";
var gIterator = (function* () {
yield 1; yield 2; yield 3; yield 4; yield 5;
})();
var gCustomIterator = {
_array: [6, 7, 8, 9],
*[ITERATOR_SYMBOL]() {
for (var i = 0; i < this._array.length; ++i) {
yield this._array[i];
}
},
};
</script>
</head>
<body>
I have two collections defined - gIterator is an iterator, and contains
[1, 2, 3, 4, 5], and gCustomIterator is an object with an @@iterator
method that contains [6, 7, 8, 9].
</body>
</html>
|
