js控制再次点击按钮之间的间隔时间可防止重复提交_javascript技巧: var wait = 60; function change() { $o = $(#J_refresh_checkcode); if(wait == 0) { $o.removeAttr(disabled); $o.html(看不清？换一张); wait = 60; } else { $o.attr(disabled, true); $o.attr(font-color, gray); $o.html(wait + 秒后可重新获取); wa