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Check if value exists in vuejs


I have data : 1,2,3,4,4,5 & my code like this:

<div id="looping" v-for="display in editlistAssesments">
  {{display.test_id}}
</div>

My code if in php such as like this

$temp_id = array();
foreach($data as $data){
  if(in_array($data ->test_id,$temp_id)){
    echo" 1: no";
    echo" 2: no";
    echo" 3: no";
    echo" 4: yes"; //because he have same value 
    echo" 5: no";
    $temp_id[] = $data ->test_id;
  }
}

how I can do that in loop vueJs..??


Solution

  • As far as I understand, you want to check if value is in array and then render it accordingly?

    If so, you need a Vue custom filter. Something like this will do the trick:

    var vm = new Vue({
        el: 'body',
    
        data: {
            editlistAssesments: [1,2,3,4,4,5]
        },
    
        filters: {
            ifInArray: function (value) {
                return this.editlistAssesments.indexOf(value) > -1 ? 'Yes' : 'No';
            }
        },
    });
    

    And then use it like this:

    <div id="looping" v-for="display in editlistAssesments">
        <span v-text="display.test_id | ifInArray"></span>
        <!-- bind Vue value to html element is better practice -->
    </div>
    

    Check docs for more information: http://vuejs.org/guide/custom-filter.html