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Javascript check if object properties are equal


By : user6096571
Date : September 14 2020, 05:00 PM
may help you . Just use 'every'. Info: https://www.w3schools.com/jsref/jsref_every.asp
code :
Object.values(answers['3']).every(value => {
    return value.valueId === 2;
})
if (Object.values(answers['3']).every(v => v.valueId === 2)) {
    // do success case
}


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How to check if object has any properties in JavaScript?


By : varghese
Date : March 29 2020, 07:55 AM
To fix this issue Assuming I declare , You can loop over the properties of your object as follows:
code :
for(var prop in ad) {
    if (ad.hasOwnProperty(prop)) {
        // handle prop as required
    }
}

How do I check if two Objects are equal in terms of their properties only without breaking the existing Object.Equals()?


By : StanThuman
Date : March 29 2020, 07:55 AM
Does that help Have you tried implementing your own IEqualityComparer? You can pass this to an .Equals() overload to define your own custom equality logic, as in
User A = User B even if they are distinct instances, if properties x, y, z are the same.
code :
var comparer = new ThingEqualityComparer();

Console.WriteLine(comparer.Equals(new Thing() { Id = 1, Name = "1" }, new Thing() { Id = 1, Name = "1" }));
Console.WriteLine(comparer.Equals(new Thing() { Id = 1, Name = "1" }, new Thing() { Id = 2, Name = "2" }));
Console.WriteLine(comparer.Equals(new Thing() { Id = 1, Name = "1" }, null));


class ThingEqualityComparer : IEqualityComparer<Thing>
{
    public bool Equals(Thing x, Thing y)
    {
        if (x == null || y == null)
            return false;

        return (x.Id == y.Id && x.Name == y.Name);
    }

    public int GetHashCode(Thing obj)
    {
        return obj.GetHashCode();
    }
}

How can I check if any of the values of the object properties are equal to 0?


By : Seb
Date : March 29 2020, 07:55 AM
I wish did fix the issue. You will have to iterate over the object keys, and check the value of each one:
code :
for(var p in x) {
    if(x[p] === 0) {
        console.log("Found!");
    }
}
for(var p in x) {
    if(x.hasOwnProperty(p)) {
        if(x[p] === 0) {
            //Found it!
        }
    }
}

Javascript check if the sum of object values is equal to 0


By : k3a
Date : March 29 2020, 07:55 AM
To fix this issue You can use Object.values to convert the object into array. Use reduce to sum the values.
Like:
code :
Object.values(lstLength).reduce((c, v) => c + v, 0)
let lstLength = {
  'property1': 3,
  'property2': 4,
  'property3': 5,
  'property4': 6,
};

if (Object.values(lstLength).reduce((c, v) => c + v, 0) == 0) console.log('no data!')
else console.log('with data!')
let lstLength = {
  'property1': 0,
  'property2': 0,
  'property3': 0,
  'property4': 0,
};

if (Object.values(lstLength).reduce((c, v) => c + v, 0) == 0) console.log('no data!')
else console.log('with data!')

check object Equal object javascript


By : unai
Date : March 29 2020, 07:55 AM
wish of those help Because objects are compared by reference:
Functions Objects (Host objects, native objects/constructors and instances) A common instance is {}, which is similar to new Object.
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