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How can i make make a variable in a javascript and give it a value from an json array?

The array is sent from a php script and looks like this:

php

$stat = array("v1" => "$v1", "v2" => "$v2", "v3" => "$v3",
"v4" => "$v4", "v5" => "$v5", "pump" => "$pump", "flow" => "$flow");
echo json_encode(($stat));

html/javascript

$.ajaxSetup({ cache: false });
setInterval(function(){
$.getJSON('statusdata.php',function(data) {
$.each(data, function(key, val) {

// I try to do something like this..
var v1 = key[1];
var v2 = key[2];
and so on..

Then i want to use a variable to alert a popup-window with some kind of warning.

Someting like:

if (v1 == 1){
run the popup function!
}

Can anyone help me?

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It seems like you don't know how to access object properties / array elements. I recommend to read the MDN JavaScript guide: developer.mozilla.org/en-US/docs/JavaScript/Guide/…. Maybe you also have to read about how $.each works: api.jquery.com/jQuery.each. FYI, data will be an object, so key will be the name of the property (e.g. 'v1', 'pump') and val will be the value of that property. –  Felix Kling Apr 7 '13 at 17:45
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1 Answer

up vote 0 down vote

You're using $.each wrong. If you're going to be assigning from data to a set up regular variables you need to do them all individually, not inside a loop.

$.getJSON('statusdata.php',function(data) {
  v1 = data["v1"];
  v2 = data["v2"];
}
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