对象的扩展

对象扩展

• 1.javaScript

  Object.assign(argu1,argu2,argu3);
  argu1:{}
  argu2:原来的对象
  argu3:扩展的对象

  var commonParams = {   gender:'man',   school:'sd'},const data = Object.assign({},commonParams,{    name: 'lvkaike',    age: 20,    city:'BJ'})

• 2.Objective-C

  NSMutableDictionary * commonParams = @{   @"gender":"man",   @"school":"sd"},NSMutableDictionary * dict = [[NSMutableDictionary alloc] initWithDictionary:ext];dict[@"name"] = @"lvkaile";dict[@"age"] =  20;dict[@"city"] = @"BJ";

  ​

  ​