Pass an array from PHP to JS

Question

hi i have a big problem i try 3 weaks to solve it but i didn't make anything i have or an errors or i don't take nothing from the results. i pas an array from query ST_AsGeoJSON from a php code in the javascript code. there are in the same file html this two codes i get the array from php to javascrypt with this line of code

var jsonAr= <?php echo json_encode($Arresu) ?>;

if i print the jsonAr i receve with document.write(jsonAr); it is give me this format

{ "type":"LineString","coordinates":[[25.9980559326738,39.2420282528175],......,,[26.0486275566016,39.2291388086281]]},{"type":"LineString","coordinates":[[26.0486275566016,39.2291388086281],......[]]}

if i try to take the coordinates and pot it in an array i try this jsonAr.coordinates[0][0] but i did not take any result , i don't know how i take the coordinates

add console.log('jsonAr'); after the variable definition to see what JS has for that variable. This will help you diagnose your own problem more easily. — DampeS8N
– DampeS8N, Commented Nov 12, 2014 at 21:35
you need to parse that JSON string first. Use var jsonAr = JSON.parse(<?php echo json_encode($Arresu) ?>); — zaynetro
– zaynetro, Commented Nov 12, 2014 at 21:36
if i use JSON.parser is say me JSON.parse: unexpected non-whitespace character after JSON data at line 1 column 647 of the JSON data — Vagos
– Vagos, Commented Nov 12, 2014 at 23:01

Casey Rule · Accepted Answer · 2014-11-12 21:36:19Z

1

jsonAr.coordinates[0] will give you the first coordinate. jsonAr.coordinates[0][0] only gives you the first number of the first coordinate.

answered Nov 12, 2014 at 21:36

Casey Rule

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Vagos Over a year ago

I try it but the firefox console say jsonAr.coordinates is undefined

Daveman · Accepted Answer · 2014-11-12 21:40:50Z

0

It looks like you want to assign two values to your variable

jsonAr = {...},{...}

Maby you want to try somethig like this:

jsonAr = [{...},{...}]
jsonAr[0].coordinates[0][0] //25.9980559326738

Or

jsonAr = [{...},{...}]
draw_function(jsonAr[0].coordinates[0][0],jsonAr[1].coordinates[0][0]) //25.9980559326738,26.0486275566016

answered Nov 12, 2014 at 21:40

Daveman

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