javascript - How to wait for AJAX calls in an each loop to complete before moving on without ASYNC: FALSE -


i have setup ajax php set of functions processes number of items on page. code inserts series of tasks database, inserts supplies database based on newly created task id's. works 90% of time. seems though task id's not created first doesn't allow supplies use id's inserting database. there way make sure task inserted, supplies inserted id, move onto next one. @ end when complete redirect new page, again put in last success call on supplies portion, redirect on first loop. process generates around 5 tasks, 12 supplies per each task. reading $.when loop not work. note: after testing ajax calls submitting correctly, 1 field on of them null, , db having issue. counter method below works.

$(document).on("click", "#submittasks", function(e) {     e.preventdefault();     var tasks = $('#tasks').find('.box');     var project_id = $('#project_id').val();     tasks.each(function() {         var trs = $(this).find('.reqtables').find('.table').find('tbody').find('tr');         var task_definition_id = $(this).find('.task_definition_id').val();         var labor_type_id = $(this).find('.laboramount').children('option:selected').val();         var task_status_id = 1;         var qty_labor = $(this).find('.laborqty').val();         var amount_labor = $(this).find('.labortotal').val();         var amount_materials = $(this).find('.mattotal').val();         var amount_gst = $(this).find('.gsttotal').val();         amount_materials = +amount_materials + +amount_gst;         amount_materials = amount_materials.tofixed(2);         var active = 1;         //console.log(div)         var task = {             project_id : project_id,             task_definition_id : task_definition_id,             labor_type_id : labor_type_id,             task_status_id : task_status_id,             qty_labor : qty_labor,             amount_labor : amount_labor,             amount_materials : amount_materials,             active : active         };         savetasks(task, trs, project_id);     }); }); function savetasks(task, trs, project_id) {     $.ajax({         type : "post",         url : "<?php echo base_url(); ?>" + "mgmt/project/savetasks",         data : task,         datatype : "json",         cache : "false",         success : function(data) {             trs.each(function() {                 var total = $(this).find('input[name="calculatedcost"]').val();                 if (total != 'n/a') {                     var task_id = data;                     var supply_id = $(this).find('.suppliespicker').children('option:selected').val();                     var task_requirement_id = $(this).find('td:first-child').data('id');                     var qty = $(this).find('input[name="calculatedqty"]').val();                     var cost_per = $(this).find('.costpicker').val();                     var delivery_cost = $(this).find('input[name="transport"]').val();                      var notes = '';                     var qty_actual = '';                     var active = 1;                     var tasksupply = {                         task_id : task_id,                         supply_id : supply_id,                         task_requirement_id : task_requirement_id,                         qty : qty,                         cost_per : cost_per,                         delivery_cost : delivery_cost,                         total : total,                         notes : notes,                         qty_actual : qty_actual,                         active : active                     };                     savetasksupplies(tasksupply);                     console.log(tasksupply);                 }             });         }     }); }  function savetasksupplies(tasksupply) {     $.ajax({         type : "post",         url : "<?php echo base_url(); ?>" + "mgmt/project/savetasksupplies",         data : tasksupply,         datatype : "json",         cache : "false",         success : function(data) {             ***** want redirect new page when last 1 of these completes ******         }     }); }

here direct solution using code provided. basic concept increment counter supplies processed. once counter reaches total number of supplies, procedure run. see comments throughout.

var totaltasksupplies = 0; var processedtasksupplies = 0;  $(document).on("click", "#submittasks", function(e) {     e.preventdefault();     var tasks = $('#tasks').find('.box');     var project_id = $('#project_id').val();      tasks.each(function() {         var trs = $(this).find('.reqtables').find('.table').find('tbody').find('tr');         var task_definition_id = $(this).find('.task_definition_id').val();         var labor_type_id = $(this).find('.laboramount').children('option:selected').val();         var task_status_id = 1;         var qty_labor = $(this).find('.laborqty').val();         var amount_labor = $(this).find('.labortotal').val();         var amount_materials = $(this).find('.mattotal').val();         var amount_gst = $(this).find('.gsttotal').val();          // add number of supplies current task total task supplies         totaltasksupplies += trs.length;          amount_materials = +amount_materials + +amount_gst;         amount_materials = amount_materials.tofixed(2);         var active = 1;         //console.log(div)         var task = {             project_id : project_id,             task_definition_id : task_definition_id,             labor_type_id : labor_type_id,             task_status_id : task_status_id,             qty_labor : qty_labor,             amount_labor : amount_labor,             amount_materials : amount_materials,             active : active         };         savetasks(task, trs, project_id);     }); }); function savetasks(task, trs, project_id) {     $.ajax({         type : "post",         url : "<?php echo base_url(); ?>" + "mgmt/project/savetasks",         data : task,         datatype : "json",         cache : "false",         success : function(data) {             trs.each(function() {                 var total = $(this).find('input[name="calculatedcost"]').val();                 if (total != 'n/a') {                     var task_id = data;                     var supply_id = $(this).find('.suppliespicker').children('option:selected').val();                     var task_requirement_id = $(this).find('td:first-child').data('id');                     var qty = $(this).find('input[name="calculatedqty"]').val();                     var cost_per = $(this).find('.costpicker').val();                     var delivery_cost = $(this).find('input[name="transport"]').val();                      var notes = '';                     var qty_actual = '';                     var active = 1;                     var tasksupply = {                         task_id : task_id,                         supply_id : supply_id,                         task_requirement_id : task_requirement_id,                         qty : qty,                         cost_per : cost_per,                         delivery_cost : delivery_cost,                         total : total,                         notes : notes,                         qty_actual : qty_actual,                         active : active                     };                     savetasksupplies(tasksupply);                     console.log(tasksupply);                 }             });         }     }); }  function savetasksupplies(tasksupply) {     $.ajax({         type : "post",         url : "<?php echo base_url(); ?>" + "mgmt/project/savetasksupplies",         data : tasksupply,         datatype : "json",         cache : "false",         success : function(data) {             ++processedtasksupplies;              // supplies have been processed             if (processedtasksupplies == totaltasksupplies) {                 //             }         }     }); }

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