
原型 - clear() 方法
此方法清除陣列(使之變空)。
語法
array.clear();
返回值
返回一個空陣列。
示例
<html> <head> <title>Prototype examples</title> <script type = "text/javascript" src = "/javascript/prototype.js"></script> <script> function showResult() { var guys = ['Sam', 'Justin', 'Andrew', 'Dan']; alert("Before using clear" ); guys.each(function(item) { alert(item ); }); guys.clear(); alert("After using clear" ); guys.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>
輸出
prototype_array_processing.htm
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