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Array Ports

This page will explain how to create an input and output port of the type 'Array'

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Click this link to see an example of all port types and code examples

A Javascript array can contain either simple values, arrays or objects

Arrays are used to store multiple values in a single variable.

E.g. [1, 2, 3], [[1, 2], [3, 4]], [{"one": 2}, {"three": 4}]

If you click the op and then the inspect icon Button you can see the array contents


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//strict mode allows us to write cleaner code
"use strict";

//Create a input port of the type Array
const inArr   = op.inArray("Array in");

//Create a output port of the type Array
const outArray  = op.outArray("Array out");

//cache for errors
var showingError = false;

//when array in changes call the function update
inArr.onChange = update;

function update()
{
    //create an array called 'tempArray' and assign
    //the array coming in to it
    var tempArray = inArr.get();

    //error checking section
    //check if arrays come in correctly on startup
    //if no array comes in just return to avoid errors
    if(!inArr)
    {
        return;
    }
    else
    {
        if(showingError)
        {
            showingError = false;
            //set ui to null if the input is not an array
            op.uiAttr({error:null});
        }
    }
    //set outArray to tempArray
    outArray.set(tempArray);
}

Follow this link for more information on Callbacks


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