I have a JSON file titled stuff.json. I am trying to get the previous json item given a certain item. For example, if I am given the key ["also-random-here"], how do I get the previous JSON item "sample-name"?
My JSON data looks as follows:
{
"random-name-here": {
"name": "name is item1"
},
"sample-name": {
"name": "name is item2"
},
"also-random-here": {
"name": "name is item3"
}
}
try this
var names={
"random-name-here": {
"name": "name is item1"
},
"sample-name": {
"name": "name is item2"
},
"also-random-here": {
"name": "name is item3"
}
};
var prevName= findPrevName(names, "also-random-here") ;
function findPrevName(item, key) {
var prevName;
for (const property in item)
{
if(property==key) break;
prevName=property;
};
return { [prevName]: item[prevName]};
};