how to convert string to int in grid

[amadolabonte]

Hi,
i am using form-markup.html and form-markup.js to convert html to grid.

In .html file i am getting the numeric data as data as strings. But i should sort these things should be in nemeric sorting.

In .js file i am using the date format as

fields: [
{type: 'int'} ,
columns: [
{sortable: true,sortType: 'asInt'}
]

Now it is not sorting in numeric order. In this case how to convert that string as int? and how to sort it?