JSON Input
Data 0: {"eid":12,"gender":"1","age":1,"pass":["2","1"]}
Data 1: {"eid": 11,"gender":"0","age":1,"pass":["1","3"]}
Data 2: {"eid":20,"gender":"1","age":1,"pass":["2","3"]}
How can we create a new array to store IDs based on the pass numbers?
For example, in a loop display:
Pass ID => 2 .... EID => 12, 20
2 => ["12","20"]
1 => [12, 11]
3 => [11,20]
Utilize the filter and some methods to inspect the contents of the pass array and then retrieve the corresponding eid values:
function grabber(data, pass) {
return data.filter(function (el) {
return el.pass.some(function (num) {
return +num === pass;
})
}).map(function (el) {
return el.eid;
});
}
grabber(data, 1); // [12, 11]
grabber(data, 2); // [12, 20]
grabber(data, 3); // [11, 20]
UPDATE
Realized on the way home from work you don't actually need some. Additionally, addressing your comment, here's how you could search for both pass and gender:
function grabber(data, options) {
return data.filter(function (el) {
return el.pass.indexOf(options.pass) > -1 && el.gender === options.gender;
}).map(function (el) {
return el.eid;
});
}
grabber(data, { gender: '0', pass: '1' }); // [11]
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