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up vote 0 down vote favorite

I have written some code where in a loop, a function is called which passes the current object in that loop iteration to the function.

The problem is I don't know how to use the object because its dynamic and I can only access the obj parameter.

Javascript

objectifyTableRow(val, i); // Populate object with properties and values

Val is an object which is passed to function objectifyTableRow

function objectifyTableRow(objRow, count) { // Create objects for calculations

    var ii = 0;
    $('#ctl00_PageContent_freight_rate_column_chaair_r' + count + " " + 'td').each(function(i, val) { // begin each
        /* Concatenate column name with subcolumn name. example objFobCost.China/Sea Origin,Air */
        if (i < 3) { // columns 0,1,2 in table row
            if (ii < arraySubColumn.length) { // Air, Sea/air, sea subcolumns
                var PropertyName = arrayColumns[0] + arraySubColumn[ii];


                objRow[PropertyName] = parseFloat($(val).html()); // Set key name with var PropertyName 

                ii += 1;
            }

            if (ii == 3) { // Reset counter
                ii = 0;
            }
        } // end of outer if

        else if (i > 2 & i < 6) {
            if (ii < arraySubColumn.length) { // Air, Sea/air, sea subcolumns
                var PropertyName = arrayColumns[1] + arraySubColumn[ii];

                objRow[PropertyName] = parseFloat($(val).html());

                ii += 1;
            }

            if (ii == 3) { // Reset counter
                ii = 0;
            }
        } // end of outer if

        else if (i > 5 & i < 9) {
            if (ii < arraySubColumn.length) { // Air, Sea/air, sea subcolumns
                var PropertyName = arrayColumns[2] + arraySubColumn[ii];

                objRow[PropertyName] = parseFloat($(val).html());

                ii += 1;
            }

            if (ii == 3) { // Reset counter
                ii = 0;
            }
        } // end of outer if

        else if (i > 8 & i < 12) {
            if (ii < arraySubColumn.length) { // Air, Sea/air, sea subcolumns
                var PropertyName = arrayColumns[3] + arraySubColumn[ii];

                ii += 1;
            }

            if (ii == 3) { // Reset counter
                ii = 0;
            }
        } // end of outer if

        else {
            if (ii < arraySubColumn.length) { // Air, Sea/air, sea subcolumns
                var PropertyName = arrayColumns[4] + arraySubColumn[ii];

                           ii += 1;
            }

            if (ii == 3) { // Reset counter
                ii = 0;
            }
        } // end of else
    });                  // end of each loop TD
    beginCalc(objRow);
};

Each object is passed to beginCalc so calculation can be made based on ID, Key and value

function beginCalc(obj) {
    // Every obj used is passed to here
    $.each(obj, function(key, element) {
    alert('ID: ' + obj[this.id] + '\n' + 'key: ' + key + '\n' + 'value: ' + element); // Check correct obj id, key and value
});

The reason I am doing this is because the objects are storing values from an asp.net grid and I thought it would be cleaner to create objects for each grid row and then do the calculations in the code by selecing obj.key: value * obj.key: value. Rather than using getDocumentByElementId.

Any ideas how to programmatically access these objects by their ID in beginCalc function?

Thanks

share|improve this question
    
What do you mean by "object parameters"? You have the object keys and values, what parameters are you talking about? –  Cecchi Jul 5 '12 at 13:48
    
When I call beginCalc() I supply an object as its arguement. Since this function call happens within a loop I am passing each object until the loop ends. so in beginCalc() I have multiple objects with different IDs. Each obj also has its own key and value pairing. Does that make more sense? –  nick gowdy Jul 5 '12 at 13:51
    
I understand that, but what are you looking for? You want an array of all the objects that you are passing to be available within beginCalc()? In that case you'll need to create that full array first, save it as a variable, and then iterate over that... there's no way to magically get a list of objects that hasn't been created yet. Maybe I'm still misunderstanding. –  Cecchi Jul 5 '12 at 13:53
    
I want to know how to programmatically access the objects by ID. An array of all the objects could help. –  nick gowdy Jul 5 '12 at 13:55
    
If they all have a specific ID you want to end up with an object mapping those IDs to their corresponding objects. So yes, iterate through your original "object of objects" and build a new one assigning the ID as the key for each. Perhaps a library like underscore.js would help keep some of your data structures organized. –  Cecchi Jul 5 '12 at 13:59

1 Answer 1

up vote 0 down vote

What you want is a connection between DOM nodes and values. Try this approach (pseudocode):

var nodes = $(...select all the nodes...);
nodes.each( function( index, node ) {
    var obj = { node: node };
    beginCalc(obj);
} );

In beginCalc(), you can now access the DOM node with obj.node. You can use the same approach to put more data into the objects to keep everything in a single place (the DOM node that you need to update + all the data that you need to update it).

share|improve this answer
    
When you say "$(...select all the nodes...); " I am not sure what you mean? –  nick gowdy Jul 5 '12 at 14:22
    
I mean $('#ctl00_PageContent_freight_rate_column_chaair_r' + count + " " + 'td'). The main point is that you should create one obj for each node instead of saving the all node values under PropertyName in one object. –  Aaron Digulla Jul 5 '12 at 15:47

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