js 判断 “”,null,undefined
if (mid == "" || mid == null || mid == undefined) {// "",null,undefinedlayer.msg('请选择分类!', {icon: 5,anim: 6,time: 1800});return false;}
时间:2024-03-16 18:04:18
js 判断 “”,null,undefined
if (mid == "" || mid == null || mid == undefined) {// "",null,undefinedlayer.msg('请选择分类!', {icon: 5,anim: 6,time: 1800});return false;}