Prototype – 元素对象 match() 方法

此方法检查元素是否与给定的 CSS 选择器匹配。

语法

element.match(selector);

返回值

返回布尔值。如果找到匹配项，则返回true否则返回false。

例子

<html>
   <head>
      <title>Prototype examples</title>
      <script type = "text/javascript" src = "/javascript/prototype.js"></script>
      
      <script>
         function showResult() {
            if( $('fruits').match('ul') ) {
            alert( " $('fruits').match('ul') returns true " );
            } else {
               alert( " $('fruits').match('ul') returns false " );
            }
            
            if( $('mcintosh').match('li#mcintosh.yummy') ) {
               alert("$('mcintosh').match('li#mcintosh.yummy') returns true");
            } else {
               alert("$('mcintosh').match('li#mcintosh.yummy') returns false");
            }

            if( $('fruits').match('p') ) {
               alert( " $('fruits').match('p') returns true " );
            } else {
               alert( " $('fruits').match('p') returns false " );
            }
         }
      </script>
   </head>

   <body>
      <p>Click the button to see the result.</p>
      
      <ul id = "fruits">
         <li id = "apples">
            <ul>
               <li id = "golden-delicious">Golden Delicious</li>
               <li id = "mutsu" class = "yummy">Mutsu</li>
               <li id = "mcintosh" class = "yummy">McIntosh</li>
               <li id = "ida-red">Ida Red</li>
            </ul>
         </li>
      </ul>
      <br />
      
      <input type = "button" value = "Show Result" 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/9071.html