Javascript handles null and null value examples

 
function dealNull(obj){ 
for(var i in obj){ 
if(null == obj[i] || 'null' == obj[i]){ 
obj[i]=''; 
}else if('object' == typeof obj[i]){ 
dealNull(obj[i]); 
} 
} 
}; 
//Test object
var a={}; 
a.aa=null; 
a.bb='null'; 
a.c=1; 
a.b={}; 
a.b.aaa=null; 
a.b.bbb='null'; 
a.b.c=1; 
a.array=[]; 
a.array.push({'a':null,'b':'null','c':1}); 
a.array.push({'a1':null,'b1':'null','c1':1}); 
a.array.push({'a2':null,'b2':'null','c2':1}); 

dealNull(a);