Hello I am creating a two dimensional array in javascript. the object looks like this.
totalCells = [
lineNumber = 0,
cells = []
];
How do I add that to this array ?
Can I do totalCells.push(1, ['a', 'b', 'c']);
But this throws me the error : cells is not defined
You can't do what you're trying. If you want keys in an array use an object. Then you can do this:
var totalCells = {
lineNumber: 0,
cells: []
};
// some logic...
totalCells.lineNumber = 1;
totalCells.cells = ['a', 'b', 'c'];
Alternatively, you could have an array of objects which ties the cells directly to multiple lineNumbers:
var totalCells = [];
// some logic...
totalCells.push({
lineNumber: 1,
cells: ['a', 'b', 'c']
});
totalCells.push({
lineNumber: 2,
cells: ['x', 'y', 'z']
});
= should be : in the object literal.
A simpler way to model your 2 dimensional array would be to use an array of arrays. e.g.
totalCells = [];
totalCells.push(['a','b','c']);
totalCells.push(['d','e','f']);
The line number is implicit, for example, in this case, totalCells[0] is the first line, etc.
As an alternative to Rory answer. Use an object
var totalCells = {}
Then you can directly add keys/properties:
totalCells[1] = ['a','b','c']
totalCells[2] = ['d','e','f']
The advantage with this is you can use your object as a Map:
totalCells[1] will return ['a','b','c']
Using underscore.js (or lodash), you can then do fancy manipulations like extract keys, etc....
