I have an array containing three columns like this:
data.push({
country: new Date(),
newSales: Math.random() * 1000,
expenses: Math.random() * 5000
});
Now, on button click, I want to add a new column in it. Can anyone let me know how we can do it?
You could iterate though the data array and add key & value to each element.
data[0]["foo"] = bar; // this can be useful if the key is not constant
or
data[0].foo = "bar"
You could define the columns in your array in a separate object like this:
var cols = { country: new Date(), newSales: Math.random() * 1000, expenses: Math.random() * 5000 };
Then say, data.push(cols);
Now in your button logic, add a new column (or rather property) to the object as follows:
obj.newCol = 'some value';
This will then be automatically reflected in your array
// Pseudocode
for i in data
data[i].foo = "bar"
This my way to add column to 2 dimensional array.
I shared for whom concerned.
var textarray = [[{ text: 'Content 1' }, { text: 'Content 2' }],
[{ text: 'Content 3' }, { text: 'Content 4' }]];
Method to add column to array in the right as
insertColumnAtRight() {
for (var i = 0; i < this.textarray.length; i++) {
this.textarray[i].push({ text: "" });
}
}
If you want to add column in the left, you can use unshift method instead of push.
Please check the "push"-method: http://www.w3schools.com/jsref/jsref_push.asp
data[0].newcolumnname = 'whatever value'