Question

141

rated 0 times [ 146] [ 5] / answers: 1 / hits: 56219 / 12 Years ago, thu, november 22, 2012, 12:00:00

I have a variable:

var code = de;

And I have an array:

var countryList = [de,fr,it,es];

Could someone help me as I need to check to see if the variable is inside the countryList array - my attempt is here:

    if (code instanceof countryList) {

        alert('value is Array!');

    } 



    else {

        alert('Not an array');

    }

but I get the following error in console.log when it's run:

TypeError: invalid 'instanceof' operand countryList

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Location: Trinidad and Tobago

Member since Fri, May 8, 2020

4 Years ago

answered 12 Years ago danae · Accepted Answer

jQuery has a utility function to find whether an element exist in array or not

$.inArray(value, array)

It returns index of the value in array and -1 if value is not present in array. so your code can be like this

if( $.inArray(code, countryList) != -1){

     alert('value is Array!');

} else {

    alert('Not an array');

}