Question related to onchange function

[thanawala27]

Hi,
I am facing some problem with this onchange function with dropdown menu.
my task is:
i have one column in a table with dropdown menus. so all the cells of that column have dropdown menus. when the page is loaded these dropdown have some predefined values (suppose, there are 5 rows in the table and the values of the cells of that column is 1, 4,2,6,5). when i change any value of any dropdown menu then, an onchange() function is invoked. i want an array in the onchange() to have the list of the new_values of that column(suppose i change 6 to 3, then that array should hold, 1,4,2,3,5 instead of
1,4,2,6,5).
how do i do this.

Any help is appreciated.

Thank You!

[gits]

hi ...

let me give you an idea to achieve your goal ...

for easy access of your array-elements try to use an object (assoc. array) instead:

var hash_map = {'1': 1, '2': 1, '3': 1};

with that you may do the following things (assuming list_value is your selected value):

// delete an element of the map
delete hash_map[old_list_value];
 
// put new value in the map
hash_map[list_value] = 1;
 
// ask for a value in the map
if (list_value in hash_map) {
    // do something
}
 
// or ask another way
if (typeof hash_map[list_value] != 'undefined') {
    // do something
}
 

try something with that ... and in case you have more questions, post your approach and we may help you with further details ...

kind regards