js 深拷贝函数

function objectClone(obj,preventName){ 
if((typeof obj)=='object'){ 
var res=(!obj.sort)?{}:[]; 
for(var i in obj){ 
if(i!=preventName) 
res[i]=objectClone(obj[i],preventName); 
} 
return res; 
}else if((typeof obj)=='function'){ 
return (new obj()).constructor; 
} 
return obj; 
}

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