filter from array with multiple value js

Question

I need to filter array with compare string and numeric result values. But get filter array values, while I enter both values. Otherwise I can't get values. That means if enter only string value I can't get filter array values.

var fullArray = [{stringValue:"apple", numericValue:"40"}, {stringValue:"banana", numericValue:"20"}, {stringValue:"berry", numericValue:"30"}, {stringValue:"mango", numericValue:"10"}]

    _.filter(fullArray, function(el){
        if(el.stringValue.toLowerCase().indexOf(stringResultValue.toLowerCase())>=0 && el.numericValue==numericResultValue){
            resultFilter.push(el);
        }
    });

what is resultFilter, stringResultValue, numericResultValue? Take an example of input data and expected result please — Andrew Paramoshkin
– Andrew Paramoshkin, Commented Feb 28, 2017 at 11:45
See Array.prototype.filter. Lodash's filter should work similar. — barbsan
– barbsan, Commented Feb 28, 2017 at 11:59
@AndrewParamoshkin, resultFilter is get a final result array. stringResultValue and numericResultValue both are already get value from click function. — user4428148
– user4428148, Commented Feb 28, 2017 at 12:25
@barbsan, yeah there is example is only filter string or numeric. I need filter with both values. — user4428148
– user4428148, Commented Feb 28, 2017 at 12:26

GilZ · Accepted Answer · 2017-05-23 13:22:16Z

1

filter expects a function that returns something truthy for elements that should be in the new array, and something falsey if they shouldn't. You should have something like:

var fullArray = [{stringValue:"apple", numericValue:"40"}, {stringValue:"banana", numericValue:"20"}, {stringValue:"berry", numericValue:"30"}, {stringValue:"mango", numericValue:"10"}]

resultFilter = _.filter(fullArray, function(el){
    return el.stringValue.toLowerCase().indexOf(stringResultValue.toLowerCase()) >= 0 && 
           el.numericValue === numericResultValue;
});

A shorter version, using ES6 syntax:

resultFilter = fullArray.filter(el => 
    el.stringValue.toLowerCase().includes(stringResultValue.toLowerCase()) && 
    el.numericValue === numericResultValue;
);

edited May 23, 2017 at 13:22

answered Feb 28, 2017 at 13:32

GilZ

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