Add input validation such that the proper error is generated when the input fields are not integers Input File: gradejs.html Output File: test 31ans. html Add on focus functionality to the input fields stating "Enter grade" Input File: test 31ans.html Output File: test 32ans.html Convert the JavaScript code within the test32ans.html application to be in object format instead (As shown in class). Rename to test33ans.html. Input File: test32ans.html Output File: test33ans.html Modify the application within test 33ans.html to have standard events Rename to test34ans.html Input File: test 33ans.html. Output File: test34ans.html Change the application within test 34ans.html to dynamically display the form as shown in class Rename to test35ans.html Input File: test34ans.html Output File: test35ans.html Externalize the JavaScript code within the test35ans.html. Called the files: test36ans.html and test 36ans.js Add input validation such that the proper error is generated when the input fields are not integers Input File: gradejs.html Output File: test 31ans. html Add on focus functionality to the input fields stating "Enter grade" Input File: test 31ans.html Output File: test 32ans.html Convert the JavaScript code within the test32ans.html application to be in object format instead (As shown in class). Rename to test33ans.html. Input File: test32ans.html Output File: test33ans.html Modify the application within test 33ans.html to have standard events Rename to test34ans.html Input File: test 33ans.html. Output File: test34ans.html Change the application within test 34ans.html to dynamically display the form as shown in class Rename to test35ans.html Input File: test34ans.html Output File: test35ans.html Externalize the JavaScript code within the test35ans.html. Called the files: test36ans.html and test 36ans.js