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Groups > comp.lang.javascript > #34316

Re: get average height in an object

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"Evertjan." <exxjxw.hannivoort@inter.nl.net> wrote on 12 Nov 2017 in 
comp.lang.javascript:

> JRough <janis.rough@gmail.com> wrote on 11 Nov 2017 in
> comp.lang.javascript: 
> 
>> This seems like it should be easy enough but I don't get any error
>> messages in the console.  I used jslint and it objects to the
>> console.log lines and it says it needs a semi colon after the data 
>> object?  In any case, maybe I did something wrong with the second for
>> loop where I am only trying to collect the height property.  I am not
>> exactly sure how to get the height property from the data object.  The
>> result of running this script is undefined.  thanks, 
>> 
>> const data          ={ 
>>      "Matt" : {  "height" : 174, "weight": 69 },
>>      "Jason" : { "height" : 190, "weight": 103 } 
>>}
>> function calcAvgHeight(data) { 
>> "use strict";
>> var count = '';
>> var avgHeight = '';
>> var result = [];
>> for (var key in data){
>>      if (!data.hasOwnProperty(key)){
>>           return;
>>     }
>>      var obj = data[key];
>>      for (var height in obj){
>>           if(!obj.hasOwnProperty.height){
>>                return;
>>           }
>>      
>>                       console.log(obj[height]);
>>                      result.push(obj[height]);
>>                      count += 1;
>>                      avgHeight = result/count;
>>                      console.log(avgHeight);
>>                          return avgHeight ;  
>>     }
>>    }
>>}
>> calcAvgHeight(data);
>> 
> 
> <script>
> 'use strict';
> let total = 0, numb = 0;
> const data = { 
>      "Matt" : {  "height" : 174, "weight": 69 },
>      "Jason" : { "height" : 190, "weight": 103 } 
>};
> 
> Object.keys(data).forEach( 
>      (key) => {
>           numb++;
>           total += data[key]['height'];
>           }
>      );
> 
> console.log('total height = ' + total, 
>      ', number of heights = ' + numb,
>      ', average height = ' + total/numb);
> 
> </script>
> 

Or showing intermediate results:

Object.keys(data).forEach( 
	(key) => {
		numb++;
		total += data[key]['height'];
		console.log('total height = ' + total, 
			', number of heights = ' + numb,
			', average height = ' + total/numb);
		}
	);




-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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get average height in an object JRough <janis.rough@gmail.com> - 2017-11-11 14:57 -0800
  Re: get average height in an object Joao Rodrigues <groups_jr-1@yahoo.com> - 2017-11-12 06:04 -0200
    Re: get average height in an object Joao Rodrigues <groups_jr-1@yahoo.com> - 2017-11-12 06:49 -0200
    Re: get average height in an object John G Harris <niam@jghnorth.org.uk.invalid> - 2017-11-12 13:39 +0000
    Re: get average height in an object Joao Rodrigues <groups_jr-1@yahoo.com> - 2017-11-12 13:40 -0200
      Re: get average height in an object JRough <janis.rough@gmail.com> - 2017-11-13 12:06 -0800
      Re: get average height in an object Joao Rodrigues <groups_jr-1@yahoo.com> - 2017-11-15 13:14 -0200
        Re: get average height in an object "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-11-15 22:21 +0100
          Re: get average height in an object "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-11-15 22:57 +0100
            Re: get average height in an object Joao Rodrigues <groups_jr-1@yahoo.com> - 2017-11-16 02:46 -0200
              Re: get average height in an object "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-11-17 13:06 +0100
    Re: get average height in an object Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-11-12 18:24 +0100
      Re: get average height in an object Joao Rodrigues <groups_jr-1@yahoo.com> - 2017-11-13 00:26 -0200
        Re: get average height in an object Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-11-13 03:42 +0100
          Re: get average height in an object Joao Rodrigues <groups_jr-1@yahoo.com> - 2017-11-13 01:23 -0200
            Re: get average height in an object Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-11-13 14:16 +0100
              Re: get average height in an object Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2017-11-13 14:20 -0300
                Dictionary-like objects (was: get average height in an object) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-11-13 19:56 +0100
                Re: Dictionary-like objects Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2017-11-13 20:26 -0200
                Re: Dictionary-like objects Julio Di Egidio <julio@diegidio.name> - 2017-11-13 15:48 -0800
                Re: Dictionary-like objects Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-11-15 02:55 +0100
                Re: Dictionary-like objects Joao Rodrigues <groups_jr-1@yahoo.com> - 2017-11-15 12:30 -0200
                Re: Dictionary-like objects John G Harris <niam@jghnorth.org.uk.invalid> - 2017-11-15 15:59 +0000
        Re: get average height in an object JRough <janis.rough@gmail.com> - 2017-11-13 12:08 -0800
      Re: get average height in an object John G Harris <niam@jghnorth.org.uk.invalid> - 2017-11-13 10:17 +0000
      Re: get average height in an object JRough <janis.rough@gmail.com> - 2017-11-13 12:07 -0800
  Re: get average height in an object "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-11-12 11:00 +0100
    Re: get average height in an object "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-11-12 11:15 +0100
    Re: get average height in an object JRough <janis.rough@gmail.com> - 2017-11-13 12:28 -0800

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