Assign value to a javascript prototype function

Question

I have written a javascript prototype function, in which i need to get value by passing variable like below

myarr.value(1,2)="Content";

myarr.prototype.value = function (rows,columns){
        console.log(rows,columns);
}

In the above function I'm getting rows and columns as 1 & 2, but getting error msg "invalid assignment left-hand side" for the content.

Help me to get the content in this way? and mention what am i doing wrong here?

Well, yes, you cannot assign to a function call. It's unclear what you expect the result to be… — deceze
– deceze ♦, Commented Sep 6, 2016 at 9:04
undefined = "Content". That's what your code does (assuming the first line is invoked on an object instance). There is no way this could work. — mdziekon
– mdziekon, Commented Sep 6, 2016 at 9:04
I 'm trying to assign array value of [1,2] as "Content", i'm unclear of getting the variable. — DeebashVFX
– DeebashVFX, Commented Sep 6, 2016 at 9:06

R. Foubert · Accepted Answer · 2016-09-06 09:10:46Z

0

What is myarr ? Is it a kind of matrix ? How did you create it ?

From what I understand, you have a matrix and you want to set values using the coordinates... If you want to use the prototype like that it will not work... You have to create a Matrix object and add the value method to its prototype. Something like that

var Matrix = function(/*Some initializers*/){
  // Initialize the matrix
}

Matrix.prototype.setValue = function(x, y, value){
  // return something
}

// Then you use it like that
var mymatrix = new Matrix();

myMatrix.setValue(2, 12, 'someValue');

But what it is important is that you have to define how you build your matrix and how you access the elements... Hope it helps

answered Sep 6, 2016 at 9:10

R. Foubert

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2 Comments

DeebashVFX Over a year ago

This is what i'm doing, but dont want to get content in this way like passing parameters, i need to get the content like "myMatrix.setValue(2,12) = "SomeValue"

R. Foubert Over a year ago

You "need to" ? What are you trying to achieve ? What's the problem doing it like that ? You will not be able to do it like that except if you do something like this : myMatrix[2][12] = 'someValue'... But it means you dont use the prototype at all

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