setTimeout(function(){ //以下修改文本控件、数字控件的属性$(".fr-texteditor").css({"background":"rgba(0,0,0,0)","color":"#c0c0c0"});//设置背景和字体颜色$(".fr-texteditor").css("border","none");//去除边框//以下修改下拉单选控件,下拉复选控件和日期控件的属性$(".fr-trigger-text.fr-border-box").css({"background":"rgba(0,0,0,0)"});//设置控件本身背景$(".fr-trigger-text").find("input").css({"background":"rgba(0,0,0,0)","color":"#c0c0c0"});//设置控件输入框背景和字体颜色$(".fr-trigger-text").css("border","none");//去除边框 $(".fr-trigger-btn-up").css({"background":"rgba(0,0,0,0)","border":"none"});//设置控件右侧点击按钮},100)这是使用社区的代码,但是只有年份的控件生效,下拉框的控件不行。然后使用了社区的另一段代码,如下$("div") .css({ "background": "rgba(0,0,0,0)", "color": "#c0c0c0" }); //设置背景和字体颜色$("div") .css("border", "none"); //去除边框,结果还是不起作用