Ways to efficiently move through a JSON object

I need assistance with navigating through a JSON object to extract one element at a time and loop through it. See the JSON data below.

{
  "noun": {
    "syn": [
      "leap",
      "saltation",
      "startle",
      "start",
      "parachuting",
      "jumping",
      "actuation",
      "descent",
      "inborn reflex",
      "increase",
      "innate reflex",
      "instinctive reflex",
      "physiological reaction",
      "propulsion",
      "reflex",
      "transition",
      "unconditioned reflex"
    ]
  },
  "verb": {
    "syn": [
      "leap",
      "bound",
      "spring",
      "startle",
      "start",
      "leap out",
      "jump out",
      "stand out",
      "stick out",
      "rise",
      "climb up",
      "jump off",
      "derail",
      "chute",
      "parachute",
      "jumpstart",
      "jump-start",
      "pass over",
      "skip",
      "skip over",
      "alternate",
      "alter",
      "appear",
      "assail",
      "assault",
      "attack",
      "change",
      "climb",
      "dive",
      "drop",
      "enter",
      "go",
      "leave out",
      "locomote",
      "look",
      "miss",
      "mount",
      "move",
      "neglect",
      "omit",
      "overleap",
      "overlook",
      "participate",
      "plunge",
      "plunk",
      "pretermit",
      "seem",
      "set on",
      "shift",
      "start up",
      "switch",
      "travel",
      "vary",
      "wax"
    ],
    "rel": [
      "leap out",
      "jump on"
    ]
  }
}

If I wanted to access the word "leap," which is nested two levels deep, how can I 1) retrieve "leap" and 2) move on to the next word in the list?

javascriptjson

Answer №1

Is this the information you seek?

Using Object.keys to iterate through a hash in JavaScript can be done like so: 
Object.keys(my_hash).forEach(function (key) { 
    Object.keys(my_hash[key]).forEach(function (key2) { 
        for(var i=0;i<my_hash[key][key2].length;i++) {
            // Here is where you can process your data and access all the words
            console.log(my_hash[key][key2][i]);
        }
    })
})

Answer №2

I was thinking you might want to give this a try.

//Your array
var array = {"noun":{"syn":["leap","saltation","startle","start","parachuting","jumping","actuation","descent","inborn reflex","increase","innate reflex","instinctive reflex","physiological reaction","propulsion","reflex","transition","unconditioned reflex"]},"verb":{"syn":["leap","bound","spring","startle","start","leap out","jump out","stand out","stick out","rise","climb up","jump off","derail","chute","parachute","jumpstart","jump-start","pass over","skip","skip over","alternate","alter","appear","assail","assault","attack","change","climb","dive","drop","enter","go","leave out","locomote","look","miss","mount","move","neglect","omit","overleap","overlook","participate","plunge","plunk","pretermit","seem","set on","shift","start up","switch","travel","vary","wax"],"rel":["leap out","jump on"]}};

//The list you want to iterate
var words = array.noun.syn;

//Iterating in the array
    for (i=0; i<words.length; i++) {
        //Words[i] is each value returned after "leap" (including "leap")
        console.log(words[i]);
    }

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