Angularjs check and compare two input field values

Question

I have 3 sections of input fields separated with different heading(Laser Pass, The Giggsy, The set up) generated from a JSON array. Here is what it looks like:

I want to compare two fields Score and Attempts and show an error message if the value of Score is larger then Attempts. Something like this:

But some section like, The Giggsy have a different type of input fields and no need to compare/check those fields. Only where it has SCORE and ATTEMPTS should compare.

When the section is filled up Show success message like this:

What I can do to make those things in angular way. Here is what I've done so far: PLUNKER

HTML:

<div class="row" ng-repeat="all in options">

   <h4> {{ all.name}} </h4>
   <div class="col-sm-5ths" ng-repeat="measurement in all.measurements">
      <div class="form-group no-margin form-oneline">
        <label style="width: 100%">{{ measurement.name }}</label>
        <input ng-model="measurement.value" type="{{ measurement.type }}" min="{{ measurement.min }}" max="{{ measurement.max }}"  class="form-control display-inline" required>
        <label style="width: 100%">{{ measurement.scale }}</label>
      </div>
    </div>
    <span style="color:red;" ng-show="testDataFieldWarning(options.measurements)">
      Score can't be larger then Attempts
    </span>
    <span style="color:Green;" >
      Done!!
    </span>
  </div>
  <button type="submit" style="margin-top:50px;" ng-disable="">Submit</button>

JS

$scope.testDataFieldWarning = function (measurements) {
    var score = 0 , attempts = 0;

    angular.forEach(measurements, function(measurement) {
      if((measurement.name) == 'Score'){
        score  = measurement.value;
      }
      if((measurement.name) == 'Attempts'){
        attempts  = measurement.value;
      }
    });
    return attempts < score;
  }

   $scope.testDataFieldValidate = function (measurement) {

      var isInvalid = false;
      angular.forEach(measurement, function(v) {
        if(typeof (v.value) == 'undefined'){
          isInvalid = true;
        }
      });

      return (isInvalid);
    }

Sorry for bad English and explanation.

Bennett Adams · Accepted Answer · 2015-12-30 16:26:24Z

1

I forked your plunker and added some additional validating functions...

  function isScoreField(measurements) {
    if (measurements[1].name === 'Score' && measurements[2].name ==='Attempts') {
      return true;
    } else {
      return false;
    }
  }

  $scope.testDataFieldInvalid = function (measurements) {
    if (isScoreField(measurements) && parseInt(measurements[2].value) < parseInt(measurements[1].value)) {
      return true;
    } else {
      return false;
    }
  };

  $scope.testDataFieldsEntered = function (measurements) {
    if (measurements[1].value && measurements[2].value) {
      return true;
    } else {
      return false;
    }
  };

... that will conditionally show/hide the done/error messages.

<span style="color:red;" ng-show="testDataFieldInvalid(all.measurements)">
  Score can't be larger than Attempts
</span>
<span style="color:Green;" ng-show="testDataFieldsEntered(all.measurements) && !testDataFieldInvalid(all.measurements)">
  Done!!
</span>

Hope this helps!

edited Dec 30, 2015 at 16:26

answered Dec 30, 2015 at 16:07

Bennett Adams

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6 Comments

Raihan Over a year ago

Thanks for your answer! But sometimes it's giving wrong warning. i.e if I add 12 in the score and 2 in the attempts it showing me Done! instead of : Score can't be larger than Attempts

Bennett Adams Over a year ago

True, it's comparing the values as if they were strings, so you just have to change the conditional to parseInt(measurements[2].value) < parseInt(measurements[1].value). I updated the plunker accordingly.

Raihan Over a year ago

Now it's perfect ! Thanks a lot

Raihan Over a year ago

Just one question here! How I can keep the submit button disable until all fields are done !

Raihan Over a year ago

Thanks, I'm trying with your suggestion. If I can solve I'll let you know.

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