I am new to jquery. I want to develop a grid with Formula's. If user right clicks on column, i need show a context menu like Edit formula for that column. I need to get the formula for that column show in text box(Separate screen). Once user changes formula, i need apply to that column.

Ex: i have 3 columns like A,B,C. C column is a formula column like C=A+B, i want to give user a chance to change it to c=a-b. 

Please help me how can i approach for this feature.

Thanks in Advance.