Displaying an object in Javascript with the for loop

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An object in Javascript is an entity with properties. Objects in javascript are represented in braces and have a key with a value. In the following example we show a javascript object. First we show it with the for loop, traversing the object through its x, y, and z keys or IDs. We can also show the object directly with the name obj followed by a dot and the key

<script>
  function show_obj(obj_name) { 
     for(let key in obj_name){ 
         console.log(obj_name[key]); 
     } 
     console.log(obj_name.x, obj_name.y, obj_name.z); 
  } 
  show_obj({x:20, y:10, z:15});

</script>

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<script>
  function show_obj(obj_name) { 
     for(let key in obj_name){ 
         console.log(obj_name[key]); 
     } 
     console.log(obj_name.x, obj_name.y, obj_name.z); 
  } 
  show_obj({x:20, y:10, z:15});
​
</script>                                