cocos2dx JS layuot纯代码实现背景颜色渐变

// view._partyBtnClassify.setBackGroundColorType(ccui.Layout.BG_COLOR_GRADIENT);
// view._partyBtnClassify.setBackGroundColorVector(cc.p(0.1,0.5));
// view._partyBtnClassify.setBackGroundColor(cc.color(255 , 255, 255),cc.color(0 , 0, 0));
// view._partyBtnClassify.setContentSize(cc.size(500, 900));
// view._partyBtnClassify.setVector(cc.p(0.1,0.1));
view._partyBtnClassify.setOpacity(0);                //开始透明度
// view._partyBtnClassify.setBackGroundColorOpacity(255);                //结束透明度
// view._partyBtnClassify.setBackGroundColorOpacitySS(255,30);
// view._partyBtnClassify.setContentSize(cc.size(500, 100));