获取变量并放入其他输入

Question

This is my script:

jQuery('#postcustomstuff tbody > tr:nth-child(3)').click(function () {

    // Get IDs
    var poleRatingsAverage  =   jQuery('#postcustomstuff tbody > tr:nth-child(2)').attr('id');
    var poleRatingsUsers    =   jQuery('#postcustomstuff tbody > tr:nth-child(4)').attr('id');
    var poleRatingsScore    =   jQuery('#postcustomstuff tbody > tr:nth-child(3)').attr('id');

    var ratings_average = jQuery(poleRatingsUsersTextAreaID).val();
    var ratings_users = jQuery(poleRatingsUsersTextAreaID).val();
    var ratings_score = parseInt(ratings_average) * parseInt(ratings_users);

})

I have one problem with my jQuery script. I must get IDs from variables: poleRatingsAverage , poleRatingsUsers and poleRatingsScore . I tried this:

alert(poleRatingsAverage); <---- This return good but in next part I must add VALUE to this:

// Values Start
var ratings_average = jQuery(poleRatingsAverage+'-value').val();
var ratings_users = jQuery(poleRatingsUsers+'-value').val();
var ratings_score = parseInt(ratings_average) * parseInt(ratings_users);

jQuery(poleRatingsScore+'-value').val(ratings_score); // Math
// Values End

What am I doing wrong in my script?

Answer 1

Yes! It's works!

This is script after editing :

jQuery('#postcustomstuff tbody > tr:nth-child(3)').click(function () {

    // Get IDs
    var poleRatingsAverage  =   jQuery('#postcustomstuff tbody > tr:nth-child(2)').attr('id');
    var poleRatingsUsers    =   jQuery('#postcustomstuff tbody > tr:nth-child(4)').attr('id');
    var poleRatingsScore    =   jQuery('#postcustomstuff tbody > tr:nth-child(3)').attr('id');

    var ratings_average = jQuery('#'+poleRatingsAverage+'-value').val();
    var ratings_users = jQuery('#'+poleRatingsUsers+'-value').val();
    var ratings_score = parseInt(ratings_average) * parseInt(ratings_users);

    jQuery('#'+poleRatingsScore+'-value').val(ratings_score);

})

Very, very, very THANKS for help !

Answer 2

this returns value of elements id

alert(poleRatingsAverage); 

here you are trying to get other elements that have similar id with "-value" on the end of that id

// Values Start
var ratings_average = jQuery(poleRatingsAverage+'-value').val();
var ratings_users = jQuery(poleRatingsUsers+'-value').val();
var ratings_score = parseInt(ratings_average) * parseInt(ratings_users);
jQuery(poleRatingsScore+'-value').val(ratings_score); // Math
// Values End

So what you are missing is

jQuery('#'+poleRatingsAverage+'-value').val();

You must say to jquery that you are looking for an id with specific value