yarn

yarn start

or

npm install

npm start

• Cell phone column can be edited when double clicked

• Clicking the column labe would sort the column alphabatically

• When the selector of the first column and the first row is checked, all rows are selected

• Clicking the Delete button will delete the selected rows

• Update will cause the Ajax invocation to update the modified rows. For now just pop up a alert panel showing the rows you are to update

• Add will add an empty row to fill in the data except the ID, which will be filled after updating

• Think of how to localize this