CODEWITHSUNDEEP
jqueryarraysjquery-select2dropdown
hnewbie
hnewbie

Reputation: 147

How to search for two values in array at the same time?

I have a select2 dropdown on my page that is populated with countries from a table in my database. A user is able to select more than one country, forming an array. I want to search for two values in the array. For example:

    var selvalues = $(this).val(); //["AS", "US", "CA"]

On the change event of the dropwdown, If "US" is one of the values and the array also contains a value that is not the "US", throw an error.

Some of the things that I have tried so far in jQuery: 

$('#countriesSelect').on('change', function(){

    var selvalues = $(this).val(); 

   console.log(selvalues .some(x => x !== 'US' && x == 'US'));

   if(selvalues.includes('US') || !selvalues.includes('US')){
        console.log('You cannot choose a foreign country when current selection is US');  
    }
   if($.inArray("US",selvalues) != -1){
        $('#usregions').show().fadeIn();
        if($.inArray("US",selvalues) != -1){}
    } else {
        $('#usregions').hide().fadeOut();
    }
    $.each(selvalues, function( index, value ) {
        console.log()
        if(value == 'US' && value != 'US'){
            console.log('You cannot choose a foreign country when current selection is US');   
        } 
    });
});

I expect to have it to throw an error based on the above criteria.

Upvotes: 0

Views: 61

Answers (1)

Taplar
Taplar

Reputation: 24965

Work the logic. It's an error if you select US and something else. Meaning you have at least two selections, one of which being US. So you do not care what the others are, so long as there are multiple and one is the US.

if (selvalues.length > 1 && selvalues.includes('US')) { ...problem... }

Upvotes: 2

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