lab-updating-data-in-a-cell.md

Lab: Updating Data in a Cell

Complete the transaction in index.js found in the folder Lab-Updating-Data-in-a-Cell-Exercise by adding code and values as necessary.

Your code should locate the two existing cells which have data matching the contents of HelloNervos.txt. Update one with the contents of HelloWorld.txt. Update the other with the contents of LoremIpsum.txt.

Your resulting transaction should contain:

• Two inputs from address1 that contain the data from the file HelloNervos.txt.
• One or more extra inputs from address1 if more capacity is needed.
• One output to address1 that contains the data from the file HelloWorld.txt.
• One output to address1 that contains the data from the file LoremIpsum.txt.
• One output to address1 with the change from the transaction, if necessary.
• A transaction fee.

In this lab exercise, all of the core cell management logic has been removed. You must construct it yourself. Feel free to copy and paste some of your code from previous exercises to complete this lab exercise, but it's recommended that you try to write as much of the code as possible.

1. Provide code to locate the two input cells that contain data matching the contents of files/HelloNervos.txt.
2. Update the data in those two cells with the contents of files/HelloWorld.txt and files/LoremIpsum.txt by creating two output cells.
3. If more input capacity is needed, add more input cells as necessary.
4. If a change cell is needed, add an output as needed.

Run your code by opening a terminal to the Lab-Updating-Data-in-a-Cell-Exercise folder and running node index.js. If you get stuck you can find the solution in the Lab-Updating-Data-in-a-Cell-Solution folder.

Once your code successfully executes, the resulting transaction ID will be printed on the screen.