Use Javascript to check if JSON object contain value [duplicate]

Question

I want to check if a certain key in a JSON object like the one below contains a certain value. Let's say I want to check if the key "name", in any of the objects, has the value "Blofeld" (which is true). How can I do that?

[ {   "id" : 19,   "cost" : 400,   "name" : "Arkansas",   "height" : 198,   "weight" : 35  }, {   "id" : 21,   "cost" : 250,   "name" : "Blofeld",   "height" : 216,   "weight" : 54  }, {   "id" : 38,   "cost" : 450,   "name" : "Gollum",   "height" : 147,   "weight" : 22  } ] 

Answer 1

you can also use Array.some() function:

const arr = [   {     id: 19,     cost: 400,     name: 'Arkansas',     height: 198,     weight: 35    },    {     id: 21,     cost: 250,     name: 'Blofeld',     height: 216,     weight: 54    },    {     id: 38,     cost: 450,     name: 'Gollum',     height: 147,     weight: 22    } ];  console.log(arr.some(item => item.name === 'Blofeld')); console.log(arr.some(item => item.name === 'Blofeld2'));  // search for object using lodash const objToFind1 = {   id: 21,   cost: 250,   name: 'Blofeld',   height: 216,   weight: 54  }; const objToFind2 = {   id: 211,   cost: 250,   name: 'Blofeld',   height: 216,   weight: 54  }; console.log(arr.some(item => _.isEqual(item, objToFind1))); console.log(arr.some(item => _.isEqual(item, objToFind2)));

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