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
x
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<html>
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<head>
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<title>Prototype examples</title>
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<script type = "text/javascript" src = "/javascript/prototype.js"></script>
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<script>
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function showResult() {
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var h = $H({ name: 'Prototype', version: 1.6 });
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var arr = h.keys();
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arr.each(function(item) {
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alert(item );
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});
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}
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</script>
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</head>
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<body>
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<p>Click the button to see the result.</p>
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<br />
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<br />
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<input type = "button" value = "Result" onclick = "showResult();"/>
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</body>
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</html>
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作者:terry,如若转载,请注明出处:https://www.web176.com/prototype_api/8731.html