How to get maximum value in multi dimension array in js

Question

Here I want to get maximum value of this multi dimensional array where tax_value is greater .

0:{id: "61", tax_value: "2.00000000"}
1:{id: "81", tax_value: "12.00000000"}

Here I am getting the array using this code.

 var array = new Array();
        if (typeof $('select[id^=item_tax]') !== "undefined")
        {
            $('select[id^=item_tax]').each(function (i, e)
            {
                if ($(e).val() > 0)
                {
                    array.push({id: $(e).val(), tax_value: $(e).find('option:selected').data('value')});
                }
            });


        }
        console.log(array);//multi dimensional array is coming as output

How to get maximum value from this array.

developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… — TarangP
– TarangP, Commented Feb 15, 2018 at 6:51

gurvinder372 · Accepted Answer · 2018-02-15 06:53:23Z

5

For returning the max tax_value, use map

var maxTaxValue = Math.max.apply( null, array.map( s => s.tax_value ) );

For returning the entire object with max tax_value.

var obj = array.find( s => s.tax_value == maxTaxValue )

answered Feb 15, 2018 at 6:53

gurvinder372

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Comments

Eddie · Accepted Answer · 2018-02-15 07:11:48Z

1

You can use the new ES6 functions to get the max tax value but you can also get the max while doing the loop.

No need for additional loop or function.

var array = new Array();
var maxValue = 0; //Init the max variable
if (typeof $('select[id^=item_tax]') !== "undefined")
{
    $('select[id^=item_tax]').each(function (i, e)
    {
        if ($(e).val() > 0)
        {
                array.push({id: $(e).val(), tax_value: $(e).find('option:selected').data('value')});
        }

        //Test weather the current tax is greater. Assign the value
        var taxValue = Number( $(e).find('option:selected').data('value') );
        if ( maxValue < taxValue ) maxValue = taxValue;
    });
}

console.log( maxValue );

edited Feb 15, 2018 at 7:11

answered Feb 15, 2018 at 6:59

Eddie

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Comments

Rukshan · Accepted Answer · 2018-02-15 06:58:38Z

0

Didn't you try in this way. You can get an array which has each row's maximum. after that you can get the overal maximum from it

answered Feb 15, 2018 at 6:58

Rukshan

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