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