Prototype - scan() 方法
此方法允许迭代给定模式的每次出现(可以是字符串或正则表达式)。
语法
string.scan(pattern, iterator);
返回值
返回原始字符串。
示例
<html>
<head>
<title>Prototype examples</title>
<script type = "text/javascript" src = "/javascript/prototype.js"></script>
<script>
function showResult() {
str = "apple, pear, orange";
alert ("Actaul Alert");
alert ( str.scan(/\w+/, alert ) );
}
</script>
</head>
<body>
<p>单击按钮查看结果。</p>
<br />
<br />
<input type = "button" value = "Result" onclick = "showResult();"/>
</body>
</html>
输出
以下示例可用于填充数组 −
示例
<html>
<head>
<title>Prototype examples</title>
<script type = "text/javascript" src = "/javascript/prototype.js"></script>
<script>
function showResult() {
var fruits = [];
var str = "apple, pear, orange";
str.scan(/\w+/, function(match) { fruits.push(match[0])});
fruits.inspect();
alert ( "fruits[0] : " + fruits[0]);
alert ( "fruits[1] : " + fruits[1]);
alert ( "fruits[2] : " + fruits[2]);
}
</script>
</head>
<body>
<p>单击按钮查看结果。</p>
<br />
<br />
<input type = "button" value = "Result" onclick = "showResult();"/>
</body>
</html>
输出
prototype_string_processing.html
