<script type="text/javascript">
// 說(shuō)明：添加、移除、檢測(cè) className
function hasClass(element, className) {
var reg = new RegExp('(//s|^)'+className+'(//s|$)');
return element.className.match(reg);
}
function addClass(element, className) {
if (!this.hasClass(element, className))
{
element.className += " "+className;
}
}
function removeClass(element, className) {
if (hasClass(element, className)) {
var reg = new RegExp('(//s|^)'+className+'(//s|$)');
element.className = element.className.replace(reg,' ');
}
}
</script>