返回到:Prototype – 元素对象
此方法采用任意数量的 CSS 选择器(字符串),并返回与其中任何一个匹配的元素的扩展后代数组。
此方法与 $$() 非常相似,但可以在一个元素的上下文中使用,而不是在整个文档中使用。支持的 CSS 语法是相同的,因此请参阅 $$() 文档了解详细信息。
语法
element.select(selector...);
返回值
返回一个 HTML 元素数组。
例子
<html> <head> <title>Prototype examples</title> <script type = "text/javascript" src = "/javascript/prototype.js"></script> <script> function showResult() { var arr = $('apples').select('[title = "yummy!"]'); // returns [h3, li#golden-delicious, li#mutsu] arr.each(function(node) { alert("First : " + node.nodeName + ': ' + node.innerHTML); }); arr = $('apples').select( 'p#saying', 'li[title = "yummy!"]'); // returns [li#golden-delicious, li#mutsu, p#saying] arr.each(function(node) { alert("Second : " + node.nodeName + ': ' + node.innerHTML); }); arr = $('apples').select('[title = "disgusting!"]'); // returns [] arr.each(function(node) { alert("Third : " + node.nodeName + ': ' + node.innerHTML); }); } </script> </head> <body"> <p id = "test">Click the button to see the result.</p> <ul id = "fruits"> <li id = "apples"> <h3 title = "yummy!">Apples</h3> <ul id = "list-of-apples"> <li id = "golden" title = "yummy!" >Golden</li> <li id = "mutsu" title = "yummy!">Mutsu</li> <li id = "mcintosh">McIntosh</li> <li id = "ida-red">Ida Red</li> </ul> <p id = "saying">An apple a day keeps the doctor away.</p> </li> </ul> <input type = "button" value = "Click" onclick = "showResult();"/> </body> </html>
返回到:Prototype – 元素对象
作者:terry,如若转载,请注明出处:https://www.web176.com/prototype_api/9011.html