Modify this page so that when the user clicks out of the ‘txtName’ field (i. e. when the focus is lost or the text field is "blurred"), you do a simple validation: Retrieve the value that the user entered. Output (to a nearby div section) a greeting to the user using their name (e. g. "Hello, Janet"). If they did not enter anything in the text field (i. e. if the value is an empty string), output to the same section: "You must enter a name." When the user re-enters the text field (i. e. when it regains the 'focus' hint hint…), clear out whatever message was in that div section previously. Note: There are better ways of doing form validation, but we’re just practicing with some basic techniques for now.

How can data be added in a table by using what view

1. the program must provide following functions to extract some statistics. note that the data_list parameter specified in these functions may be the same for all functions or different for different functions—that is your choice. a skeleton file is provided on mirmir. a) open_file()prompts the user to enter a year number for the data file. the program will check whether the year is between 1990 and 2015 (both inclusive). if year number is valid, the program will try to open data file with file name ‘year.txt’, where is the year. appropriate error message should be shown if the data file cannot be opened or if the year number is invalid. this function will loop until it receives proper input and successfully opens the file. it returns a file pointer and year. i. hint: use string concatenation to construct the file name b) read_file(fp)has one parameter, a file pointer read. this function returns a list of your choosing containing data you need for other parts of this project. c) find_average(data_list) takes a list of data (of some organization of your choosing) and returns the average salary. the function does not print anything. hints: i. this is not the average of the last column of data. it is not mathematically valid to find an average by finding the average of averages—for example, in this case there are many more in the lowest category than in the highest category. ii. how many wage earners are considered in finding the average (denominator)

How do we use the sumif formula (when dealing with different formats) ?