Looping through array and printing values

Question

I have an array with the structure

var citizens1 = [{lat:null,lng:null,socialSecurityNumber:null}];

I would like to use a loop to print the values of each element however this does not work for me:

Code

function animate(index,d) {  

       if (d>eol[index]) {

        marker[index].setPosition(endLocation[index].latlng);       

        if(marker[index].getPosition() == endLocation[index].latlng){
            console.log('Completed'+' '+index);
        }  


        return;
     }

         var p = polyline[index].GetPointAtDistance(d);
         marker[index].setPosition(p);
         updatePoly(index,d);

         timerHandle[index] = setTimeout("animate("+index+","+(d+step)+")", tick);

         citizens1.push({lat:marker[index].getPosition().lat(),lng:marker[index].getPosition().lng(),socialSecurityNumber:global_citizens[index].socialSecurityNumber});

         if(citizens1.length = '500'){           
             console.log('500 records saved');          
             window.clearTimeout( timerHandle);

             for(var i = 0; i < citizens1.length ; i++){


                 console.log(citizens1.lat +',' +citizens1.lng+','+citizens1.socialSecurityNumber); 




             }

             citizens1 = [];
         }

  }

Error

TypeError: citizens1[i].lat is undefined

Is the period after name a typo just in here, or in your real program as well? — kojiro
– kojiro, Commented Oct 14, 2013 at 2:44
If this code doesn't work, then it's because you array doesn't contain what you think it does. I'd suggest you do a console.log(Students[i]) instead and see what's really there. — jfriend00
– jfriend00, Commented Oct 14, 2013 at 2:48

Flight Odyssey · Accepted Answer · 2013-10-14 02:55:53Z

1

citizens1.length = '500' should be citizens1.length == 500

Also

console.log(citizens1.lat +',' +citizens1.lng+','+citizens1.socialSecurityNumber);

should be

console.log(citizens1[i].lat +',' +citizens1[i].lng+','+citizens1[i].socialSecurityNumber);

You need to print the properties of each element of the array, not of the array itself.

answered Oct 14, 2013 at 2:55

Flight Odyssey

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1 Comment

devdar Over a year ago

i will fix that thank you however it still doesn't fix the printing of each element

jfriend00 · Accepted Answer · 2013-10-14 02:59:35Z

1

This line:

console.log(citizens1.lat +',' +citizens1.lng+','+citizens1.socialSecurityNumber);

needs to have the array index in it:

console.log(citizens1[i].lat +',' +citizens1[i].lng+','+citizens1[i].socialSecurityNumber);

answered Oct 14, 2013 at 2:59

jfriend00

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Comments

thefourtheye · Accepted Answer · 2013-10-14 03:01:26Z

1

I hope you have initialised the Students as

Students = [{name:null,age:null,address:null}];

edited Oct 14, 2013 at 3:01

thefourtheye

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answered Oct 14, 2013 at 2:54

Pramod

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1 Comment

devdar Over a year ago

i modified the code posting the real code instead of an example of my scenario

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