My task involves working with a JSON string that looks like this...
JSON:
[{"my_id":"100002","my_confirmation":"682354682"},{"my_id":"100005","my_confirmation":"281735345"},{"my_id":"100009","my_confirmation":"361567356"}]
After parsing this JSON into a key/value pair array, I need to figure out the simplest way to use JavaScript to return a boolean value when trying to find a match for "my_id" with the value of "100005". And is it necessary to first parse the JSON into an array?
When working with JSON strings in ECMA5, you can utilize Array.prototype.some to parse the data.
Here is an example in Javascript:
var jsonString = '[{"my_id":"100002","my_confirmation":"682354682"},{"my_id":"100005","my_confirmation":"281735345"},{"my_id":"100009","my_confirmation":"361567356"}]';
var matches = JSON.parse(jsonString).some(function (obj) {
return obj.my_id === '100005';
});
console.log(matches);
This code will output:
function myContains(jsonStr, key, value) {
return JSON.parse(jsonStr).some(function (obj) {
return obj[key] === value;
});
}
var jsonString = '[{"my_id":"100002","my_confirmation":"682354682"},{"my_id":"100005","my_confirmation":"281735345"},{"my_id":"100009","my_confirmation":"361567356"}]';
console.log(myContains(jsonString, 'my_id', '100005'));
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