This question seems straightforward, but I'm struggling to solve it.
Could someone help me with a JavaScript solution to retrieve the largest value from this JSON object?
{"data":{"one":21,"two":35,"three":24,"four":2,"five":18},"meta":{"title":"Happy with the service"}}
I am specifically looking for:
"two":35
as it contains the highest value.
Any assistance would be greatly appreciated.
let jsonData = '{"info":{"first":18,"second":27,"third":37,"fourth":5,"fifth":12},"information":{"name":"Satisfied with the assistance"}}'
let infoData = JSON.parse(jsonData).info
let maxProperty = null
let maximumValue = -1
for (let property in infoData) {
if (infoData.hasOwnProperty(property)) {
let val = infoData[property]
if (val > maximumValue) {
maxProperty = property
maximumValue = val
}
}
}
If you happen to be using underscore library:
var max_key = _.invert(data)[_.max(data)];
Here's a breakdown of how this code snippet functions:
var data = {apple:15, banana:30, cherry:20, date:5, fig:12};
var inverted = _.invert(data); // {15:'apple', 30:'banana', 20:'cherry', 5:'date', 12:'fig'};
var max = _.max(data); // 30
var max_key = inverted[max]; // {15:'apple', 30:'banana', 20:'cherry', 5:'date', 12:'fig'}[30] => 'banana'
This is my code snippet to find the largest key in an object
function findLargestKey(obj) {
var max, k; // set max initially undefined to handle negative keys
for (var key in obj) { if (obj.hasOwnProperty(key)) { max = parseInt(key); break; }} //get any key
for (var key in obj) { if (obj.hasOwnProperty(key)) { if((k = parseInt(key)) > max) max = k; }}
return max;
}
Once you've parsed JSON, another way to work with the data is by iterating through the object.
var jsonData = jQuery.parseJSON('{"apple":9,"banana":3,"cherry":12,"date":7,"fig":15}' );
var highestValue = 0;
for (item in jsonData)
{
if (jsonData[item] > highestValue)
{
highestValue = jsonData[item];
}
}
console.log(highestValue);
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