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Include unavailable objects in filtering

I am new to JS. I want to include all the unavailable objects of Value while filtering. In the code below, I am applying the condition Value >= 4 && Value < 6. I want (Value >= 4 && Value < 6) || unavailable values of Value`

var Annual = [{"Date":1998,"Value":6.5,"GDPAnn":9062800},{"Date":1999,"GDPAnn":9631200},{"Date":2000,"Value":4.1,"GDPAnn":10251000},{"Date":2001,"GDPAnn":10581900}]

result = Annual.filter(function(v) { return v.Value >= 4 && v.Value < 6; })

console.log(result);

7 months ago · Juan Pablo Isaza
3 answers
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0

Add a !v.Value condition to your boolean expression

var Annual = [{"Date":1998,"Value":6.5,"GDPAnn":9062800},{"Date":1999,"GDPAnn":9631200},{"Date":2000,"Value":4.1,"GDPAnn":10251000},{"Date":2001,"GDPAnn":10581900}]

result = Annual.filter(function(v) { return (v.Value >= 4 && v.Value < 6) || !v.Value; })

console.log(result);

Edit:

Like said in a comment below, in a case that you would not to consider that any falsy value is invalid (like zero, empty string, etc), you might prefer using the Object.prototype.hasOwnProperty method.

const Annual = [{"Date":1998,"Value":6.5,"GDPAnn":9062800},{"Date":1999,"GDPAnn":9631200},{"Date":2000,"Value":4.1,"GDPAnn":10251000},{"Date":2001,"GDPAnn":10581900}]

const result = Annual.filter(function(v) { 
    return (v.Value >= 4 && v.Value < 6) || !v.hasOwnProperty("Value"); 
})

console.log(result);

7 months ago · Juan Pablo Isaza Report

0

typeof check if value undefined make the job too.

const Annual = [{"Date":1998,"Value":6.5,"GDPAnn":9062800},{"Date":1999,"GDPAnn":9631200},{"Date":2000,"Value":4.1,"GDPAnn":10251000},{"Date":2001,"GDPAnn":10581900}]

result = Annual.filter((v) => v.Value >= 4 && v.Value < 6 || typeof v.Value === "undefined");

console.log('res',result);

7 months ago · Juan Pablo Isaza Report

0

use hasOwnProperty method to check if the object has a property called Value and negate it.

var Annual = [{"Date":1998,"Value":6.5,"GDPAnn":9062800},{"Date":1999,"GDPAnn":9631200},{"Date":2000,"Value":4.1,"GDPAnn":10251000},{"Date":2001,"GDPAnn":10581900}]

result = Annual.filter(function(v) { return (v.Value >= 4 && v.Value < 6) || !v.hasOwnProperty('Value') })

console.log(result);

7 months ago · Juan Pablo Isaza Report
Answer question
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