Say I have this JSON:
[
{
\"ID\": \"1\",
\"title\": \"Title 1\",
},
{
\"ID\": \"2\",
\"title\": \"Title 2\",
Something like this, perhaps?
items = [];
for (key in jsonobj) {
if (!itemExists(items, key)) {
items[items.length] = key
}
}
function itemExists(items, value) {
for (i = 0; i < items.length; i++) {
if (items[i] == value) {
return true
}
}
return false;
}
Of course, that will return items that exist in any one of the objects, not that exist in all. It's not entirely clear from your question if this is the solution you want.