如題：var doubleArray ;if(!doubleArray || (doubleArray.lenght==&& doubleArray[0].length == 0 ){return;}
判斷一個(gè)雙重?cái)?shù)組變量：(不存在或者為空或者為[[]]) == true?
富國(guó)滬深
2018-11-23 19:15:02