Question

I need to serialize a matched set so it’s values can be passed to my rails app.

The matched set code is (returns the parent div of every uninitialized select element):

jQuery('select').filter(function(index){
     return jQuery(this).val() == 0;}).closest('div')

for serialization I really only need the id of each matched element so I tried:

jQuery('select').filter(function(index){
     return jQuery(this).val() == 0;}).closest('div').attr('id')

Unfortunatly attr() only works on the first element in a matched set.

Since the resulting javascript will be sent via rails’ remote_function :with I believe javascript can only be one statement.

How can a matched set be serialized, or to-string’d?

Answer 1

For variety’s sake, here’s an answer using map:

result = jQuery('select')
    .filter( function(index){
        return jQuery(this).val() == 0;
    })
    .closest('div')
    .map( function(){
        return this.id;
    })
    .get()       // stop here if you want an array
    .join(',');  // or here if you want a string