Find JSON array has particular value for particular Key in Angular

Question

I have the following JSON array:

[
  { "id": "1", "service": "B" },
  { "id": "2", "service": "A" },
  { "id": "3", "service": "C" }
]

I want to check if the JSON array has service "A", if yes then return true.

I am using angular.js. I used angualr.forEach loop for it but break is not working in angular forEach. Is there any solution with JavaScript map function.

So, I want to create a function which has the above JSON array as an argument and returns true if the JSON array has a particular value("A") for a particular Key("service").

Pranav C Balan · Accepted Answer · 2017-01-10 06:28:10Z

2

Use native JavaScript Array#some method.

var data = [{
  "id": "1",
  "service": "B"
}, {
  "id": "2",
  "service": "A"
}, {
  "id": "3",
  "service": "C"
}];

console.log(data.some(function(v) {
  return v.service == 'A';
}))

For older browser compatibility check polyfill option.

answered Jan 10, 2017 at 6:28

Pranav C Balan

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Comments

digit · Accepted Answer · 2017-01-10 06:30:31Z

1

You can use angular foreach anyway. Set the flag to stop the loop. Try this.

var breakLoop = false;
angular.forEach(arr, function (val) {
   if (val.service == 'A') {
      breakLoop = true;
   }
});
console.log(breakLoop)

answered Jan 10, 2017 at 6:30

digit

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Comments

Sreehari S · Accepted Answer · 2017-01-10 06:39:17Z

1

  function myFunction(data,myVal,myKey){
   var flag=false;
   angular.forEach(data,function(obj,k){
        if(obj[myKey]==myVal){
           flag=true;
          }
        });
   return flag;
  }

answered Jan 10, 2017 at 6:39

Sreehari S

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