此方法返回哈希的所有键的数组。
语法
hash.keys();
返回值
返回具有哈希的所有键的字符串数组。
例子
<html>
<head>
<title>Prototype examples</title>
<script type = "text/javascript" src = "/javascript/prototype.js"></script>
<script>
function showResult() {
var h = $H({ name: 'Prototype', version: 1.6 });
var arr = h.keys();
arr.each(function(item) {
alert(item );
});
}
</script>
</head>
<body>
<p>Click the button to see the result.</p>
<br />
<br />
<input type = "button" value = "Result" onclick = "showResult();"/>
</body>
</html>作者:terry,如若转载,请注明出处:https://www.web176.com/prototype_api/8731.html
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