返回到:Prototype – 元素对象
此方法检查元素是否具有给定的 CSS 类名。
语法
element.hasClassName( className );
返回值
如果元素具有给定的类名,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( $('grandfather').hasClassName("test") ) { alert("Grandfather has CSS test class."); } if( $('father').hasClassName("test") ) { alert("Father has CSS test class."); } if( $('kid').hasClassName("test") ) { alert("Kid has CSS test class."); } } </script> <style> .test { font-size: 12px; margin-left: 1em; } </style> </head> <body> <p>Click the button to see the result.</p> <div id = "grandfather" class = "test">This is grand father <div id = "father"> This is father. <div id = "kid" class = "test">This is kid</div> </div> </div> <br /> <input type = "button" value = "showResult" 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/9092.html