javascript - How to join array values in jQuery but formatting them? -

i have following input in javascript: ["1213381233", "1213551233", "1213551255"] , need join them , format them. take following example:

<div id="segment_form">   <button id="add_condition">     click me   </button> </div> 

var data_field = 'asset_locations_name'; var data_condition = 'in'; var data_values = ["1213381233", "1213551233", "1213551255"];  $("#segment_form").on('click', '#add_condition', function() {   var li = '';   var has_parenthesis = false;    if (data_condition == 'in' || data_condition == 'not in' || data_condition == 'between' || data_condition == 'not between') {     has_parenthesis = true;   }    if (data_values instanceof array && data_values.length >= 1) {     li += '<li data-field="' + data_field + '" data-condition="' + data_condition + '">';     li += data_field + ' ' + data_condition;      if (has_parenthesis) {       li += '( ';     }      $.each(data_values, function(index, value) {       li += '<span title="click remove item list" data-id="' + value + '">' + value + '</span>';     });      if (has_parenthesis) {       li += ' )';     }     li += '</li>';   }    $('body').append(li); }); 

the idea have following output:

asset_locations_name in (1213381233,1213551233,1213551255)

my code working getting:

asset_locations_name in( 121338123312135512331213551255 )

the trick here can't data_values.join() because need value of each add data-id property on span itself.

any other clean solution? welcome!

i forgot mention there fiddle here ready play with.

what this?

var data_field = 'asset_locations_name'; var data_condition = 'in'; var data_values = ["1213381233", "1213551233", "1213551255"];  $("#segment_form").on('click', '#add_condition', function() {   var li = '';   var has_parenthesis = false;    if (data_condition == 'in' || data_condition == 'not in' || data_condition == 'between' || data_condition == 'not between') {     has_parenthesis = true;   }    if (data_values instanceof array && data_values.length >= 1) {     li += '<li data-field="' + data_field + '" data-condition="' + data_condition + '">';     li += data_field + ' ' + data_condition;      if (has_parenthesis) {       li += '(';     }      $.each(data_values, function(index, value) {       // note 'prefix' variable here       var prefix = (index == 0) ? '' : ', ';       li += '<span title="click remove item list" data-id="' + value + '">' + prefix + value + '</span>';     });      if (has_parenthesis) {       li += ')';     }     li += '</li>';   }    console.log('data_field =>', data_field, 'data_condition => ', data_condition, 'data_values =>', data_values, 'li =>', li);    $('body').append(li); }); 

i created new fiddle solution.