[ECMAScript 6] MultipleValuesForKey

/**
 * Created by Lusien.GG on 17-06-16.
 */
'use strict'
function keyValue(input) {
    let collection = []
    for (let i=0; i<input.length-1; i++){
        let tokens = input[i].split(' ')
        let obj = { key: tokens[0],value: tokens[1] }
        collection.push(obj)
    }
    let a = true;
    for ( let obj of collection){
        if (obj.key === input[input.length-1]) {
            console.log(obj.value)
            a = false;
        }
    }
    if(a)
        console.log("None")
}
// keyValue(['key value',
//           'key eulav',
//           'test tset',
//           'key'])