function _isNull(val) {
if(val ==undefined|| val ==null|| val ==""|| val ==''
|| val =="undefined"|| val =="null"|| val =="NULL") {
return true;
}
return false;
}
function _isNull(val) {
if(val ==undefined|| val ==null|| val ==""|| val ==''
|| val =="undefined"|| val =="null"|| val =="NULL") {
return true;
}
return false;
}
本文标题:判断返回结果是否为空或undefined
本文链接:https://www.haomeiwen.com/subject/vmqbsxtx.html
网友评论