Develop Reference

How can I call my validate function before sending my ajax when a button is clicked?

Hello everyone I have a table that's dynamically generated from database.
This is the table.
I have all the code that works fine,but I only need proper timing of execution
1) Check if all mandatory fields are populated on button click, if not don't send ajax.
2) When all mandatory fields are populated on button click then call ajax and send proper values to c# and later to database.
First I need to check if all mandatory fields are filled in(check Mandatory column(yes or no values):
$(function () {
$("#myButton").on("click", function () {
// Loop all span elements with target class
$(".IDMandatory").each(function (i, el) {
// Skip spans which text is actually a number
if (!isNaN($(el).text())) {
return;
}
// Get the value
var val = $(el).text().toUpperCase();
var isRequired = (val === "TRUE") ? true :
(val === "FALSE") ? false : undefined;
// Mark the textbox with required attribute
if (isRequired) {
// Find the form element
var target = $(el).parents("tr").find("input,select");
if (target.val()) {
return;
}
// Mark it with required attribute
target.prop("required", true);
// Just some styling
target.css("border", "1px solid red");
}
});
})
});
If not don't call ajax and send values. If all fields are populated then call ajax to send values to c#.
This is the ajax code that takes values from filed and table and send's it to c# WebMethod and later to database.
$(function () {
$('#myButton').on('click', function () {
var ddl = $('#MainContent_ddlBusinessCenter').val()
var myCollection = [];
$('#MainContent_gvKarakteristike tbody').find('tr:gt(0)').each(function (i, e) {
var row = $(e);
myCollection.push({
label: valuefromType(row.find(row.find('td:eq(1)').children())),
opis: valuefromType(row.find(row.find('td:eq(3)').children()))
});
});
console.log(myCollection);
function valuefromType(control) {
var type = $(control).prop('nodeName').toLowerCase();
switch (type) {
case "input":
return $(control).val();
case "span":
return $(control).text();
case "select":
('Selected text:' + $('option:selected', control).text());
return $('option:selected', control).text();
}
}
var lvl = $('#MainContent_txtProductConstruction').val()
if (lvl.length > 0) {
$.ajax({
type: "POST",
url: "NewProductConstruction.aspx/GetCollection",
data: JSON.stringify({ 'omyCollection': myCollection, 'lvl': lvl, 'ddl': ddl }),
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
if (parseInt(response.d) > 0)
alert("Saved successfully.");
else
alert("This object already exists in the database!");
console.log(response);
location.reload(true);
},
error: function (response) {
alert("Not Saved!");
console.log(response);
location.reload(true);
}
});
}
else {
alert("Please fill in the Product Construction field!")
}
});
});
I need code to execute first mandatory fields and when they are all filled in then call ajax part of the code!
Can anyone please help !
If you need more explanation just ask !
Thanks in advance !
Update Liam helped allot me but ajax is not working on button click.
function validate() {
// Loop all span elements with target class
$(".IDMandatory").each(function (i, el) {
// Skip spans which text is actually a number
if (!isNaN($(el).text())) {
return;
}
// Get the value
var val = $(el).text().toUpperCase();
var isRequired = (val === "TRUE") ? true :
(val === "FALSE") ? false : undefined;
// Mark the textbox with required attribute
if (isRequired) {
// Find the form element
var target = $(el).parents("tr").find("input,select");
if (target.val()) {
return;
}
// Mark it with required attribute
target.prop("required", true);
// Just some styling
target.css("border", "1px solid red");
}
});
}
function sendAjax() {
var ddl = $('#MainContent_ddlBusinessCenter').val()
var myCollection = [];
$('#MainContent_gvKarakteristike tbody').find('tr:gt(0)').each(function (i, e) {
var row = $(e);
myCollection.push({
label: valuefromType(row.find(row.find('td:eq(1)').children())),
opis: valuefromType(row.find(row.find('td:eq(3)').children()))
});
});
console.log(myCollection);
function valuefromType(control) {
var type = $(control).prop('nodeName').toLowerCase();
switch (type) {
case "input":
return $(control).val();
case "span":
return $(control).text();
case "select":
('Selected text:' + $('option:selected', control).text());
return $('option:selected', control).text();
}
}
var lvl = $('#MainContent_txtProductConstruction').val()
if (lvl.length > 0) {
$.ajax({
type: "POST",
url: "NewProductConstruction.aspx/GetCollection",
data: JSON.stringify({ 'omyCollection': myCollection, 'lvl': lvl, 'ddl': ddl }),
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
if (parseInt(response.d) > 0)
alert("Saved successfully.");
else
alert("This object already exists in the database!");
console.log(response);
location.reload(true);
},
error: function (response) {
alert("Not Saved!");
console.log(response);
location.reload(true);
}
});
}
else {
alert("Please fill in the Product Construction field!")
}
}
$(function () {
$('#myButton').on('click', function () {
if (validate()){
sendAjax();
}
})
});

If you want to execute these in order why don't you just add one click handler that calls each function:
function validate(){
// Loop all span elements with target class
$(".IDMandatory").each(function (i, el) {
// Skip spans which text is actually a number
....etc.
}
function sendAjax(){
var ddl = $('#MainContent_ddlBusinessCenter').val()
var myCollection = [];
..etc.
}
$(function () {
$('#myButton').on('click', function () {
validate();
sendAjax();
}
});
Seems it would make sense if your validate function actually returns true or false if your form was valid too. then you could:
$(function () {
$('#myButton').on('click', function () {
if (validate()){
sendAjax();
}
}
});
I'm not really sure why your doing this:
// Mark it with required attribute
target.prop("required", true);
when you validate? If you just add this into your HTML it will handle required. adding it here seems a bit strange. I'm guessing your not actually submitting the form? It'd make more sense to add the validation message yourself rather than use this attribute.
Your codes not working because your not returning anything from your validate function. It's not 100% clear to me what is valid and what isn't so I can't alter this. But you need to add return true; for valid cases and return false;for invalid cases for the if statement if (validate()){ to work.

How to refresh the page with updated data when click update button

function update(){
var name= document.getElementById("TextBox").value;
$.ajax({
url: '....',
type: 'post',
data: {....//many data include// 'name' : name, ....},
success: function(data) {
var replacevalue=data.replace(/[\[\]']/g,'' );
alert(replacevalue);
var stringstatus=replacevalue.replace(/['"]+/g, '');
alert(stringstatus);
if(stringstatus == "success"){
alert ("Successfully Update ")
}
else{
alert("Failed!");
return ;
}
returnToDisplayPage();
},
error: function(xhr, desc, err) {
console.log(xhr);
console.log("Details: " + desc + "\nError:" + err);
}
});
}
function returnToDisplayPage(){
var id = document.getElementById("TextBox").text;
window.location = './DisplayPage.php?Name='+id;
}
Please suggest me. How should I do to get the updated data when click update button and refresh or reload page ? In function returnToDisplayPage() methods. I got only the name of update data and other related fields data didn't get back.

Try something like this:
$.post('url', {params}, function(response){
//Here you check if you got response from url
// And then you can do whatever you like to do with received data
if(response == 'ok'){
//do your stuff
//then
window.location.reload();
}
}

When we will get result in response then After 5 seconds page will be refresh..
success: function(data){
if(data.success == true){ // if true (1)
setTimeout(function(){// wait for 5 secs(2)
location.reload(); // then reload the page.(3)
}, 5000);
}
}

ajax loading indicator stopped in between

I am saving data on a save button click that calls ajax and passing json data to a controller method but when we save it loading starts and suddenly stop though the data is not saved.
It is not working I have tried it in all way but not working please help me on this.
<button type="button" id="saveDeleg" class="btn_reg_back btnmainsize btnautowidth btngrad btnrds btnbdr btnsavesize " aria-hidden="true" data-icon="">#Resources.Resource.Save</button>
$('#saveDeleg').click(function() {
var response = Validation();
if (!response) {
return false;
}
$("#overlay").show();
$('.loading').show();
if ($('#organName').val() == '') {
$('#validorganisation').show();
return false;
} else {
$('#validorganisation').hide();
}
//Contact name
var SubDelegation = $('#subdelegation').is(':checked');
var CopyNotification = $('#copynotification').is(':checked');
var ArrangementId = $("#ArrangementId").val();
var paramList = {
ArrangementId: ArrangementId,
ArrangementName: $('#arrangName').val(),
OrganisationName: $('#organName').val(),
OrganisationId: $('#OrganisationId').val(),
ContactName: $('#contactName').val(),
ContactId: $('#ContactId').val(),
SubDelegation: $('#subdelegation').is(':checked'),
CopyNotification: $('#copynotification').is(':checked'),
ContactType: $('#ContactType').val(),
SelectedTypeName: $("input[name$=SelectedType]:checked").val()
};
setTimeout(function() {
$.ajax({
async: false,
type: "POST",
url: '#Url.Action("SaveDelegation", "Structures")',
dataType: "json",
contentType: "application/json; charset=utf-8",
data: JSON.stringify(paramList),
processdata: true,
success: function(result) {
//stopAnimation()
paramList = null;
if (result == 0) {
window.location.href = '../Structures/MyDelegationArrangement';
} else if (result == 1) {
window.location.href = '../Structures/CreateDelegation';
} else if (result == 2) {
window.location.href = '../Home/Error';
} else if (result == 3) {
window.location.href = '../Account/Login';
} else {
//validation message
alert('Error');
}
},
error: function() {},
complete: function() {
$("#overlay").hide();
$('.loading').hide();
}
});
}, 500);
});

The problem with the loading indicator is because you used async: false which locks up the UI. Remove that setting.
Also note that if the data is not being saved I would assume that your AJAX call is returning an error. If so, check the console to see the response code. It may also be worth putting some logic in the error callback function to give you some information on whats happened, as well as inform your users about what to do next.

Preventing multiple requests from ajax

I have "load more" button, and if I click it fast enough it load the same content twice, and I want to prevent it.
This is how I call to the load more with ajax:
<script type="text/javascript">
function loadmore() {
var val = document.getElementById("result_no").value;
var userval = document.getElementById("user_id").value;
$.ajax({
type: 'post',
url: 'fetch.php',
data: {
getresult: val,
getuserid: userval
},
context: this,
success: function(response) {
var content = document.getElementById("result_para");
content.innerHTML = content.innerHTML + response;
document.getElementById("result_no").value = Number(val) + 10;
}
});
}
</script>
<div id="content">
<div id="result_para">
</div>
</div>
<input type="hidden" id="user_id" value="<?php echo $userid;?>">
<input type="hidden" id="result_no" value="15">
<input type="button" id="load" onclick="loadmore()" value="Load More Results">

You could set a loading variable to true at the start of loadmore, and set it back to false in the ajax callback. loading should be declared outside of loadmore though (see what a closure is).
var loading = false;
function loadmore()
{
if (loading) {
return ;
}
loading = true;
var val = document.getElementById("result_no").value;
var userval = document.getElementById("user_id").value;
$.ajax({
type: 'post',
url: 'fetch.php',
data: {
getresult:val,
getuserid:userval
},
context: this,
success: function (response) {
loading = false;
var content = document.getElementById("result_para");
content.innerHTML = content.innerHTML+response;
document.getElementById("result_no").value = Number(val)+10;
},
error: function () {
loading = false;
}
});
}
Instead of using that variable, you could also programmatically disable/enable the button, but that means that your button will flicker if the request is fast.

You can prevent from this by disable the button after first click, so change this lines:
success: function (response) {
var content = document.getElementById("result_para");
content.innerHTML = content.innerHTML+response;
document.getElementById("result_no").value = Number(val)+10;
}
With this lines:
success: function (response) {
document.getElementById("load").disabled = true;
var content = document.getElementById("result_para");
content.innerHTML = content.innerHTML+response;
document.getElementById("result_no").value = Number(val)+10;
document.getElementById("load").disabled = false;
}

you could disable the button when the "load more" button is clicked then then use the javascript function setTimeout to remove the disabled attribute from the button after a period of time. This would mean that the button would not be able to be clicked after the first click and even if the ajax request returned an error the button would still be able to be clicked.
$('#load').click(function {
// disable the button
$(this).prop('disabled', true);
// after three seconds enable the button again
var timeout = setTimeout(function() { $(this).prop('disabled', false); }, 3000);
});

my javascript code will not proceed to delete my data from jqGrid

just want to ask regarding my javascript code. I have a function that will delete and edit a data in my jqgrid. But everytime i run my code, it will not delete and edit if I dont put an alert in some portion of the code. Why is it happening? How can i make my program run without the alert?
Below is my delete function:
function woodSpeDelData(){
var selected = $("#tblWoodSpe").jqGrid('getGridParam', 'selrow');
var woodID='';
var woodDesc='';
var codeFlag = 0;
var par_ams = {
"SessionID": $.cookie("SessionID"),
"dataType": "data"
};
//this part here will get the id of the data since my id was hidden in my jqgrid
$.ajax({
type: 'GET',
url: 'processjson.php?' + $.param({path:'getData/woodSpecie',json:JSON.stringify(par_ams)}),
dataType: primeSettings.ajaxDataType,
success: function(data) {
if ('error' in data)
{
showMessage('ERROR: ' + data["error"]["msg"]);
}
else{
$.each(data['result']['main']['rowdata'], function(rowIndex, rowDataValue) {
$.each(rowDataValue, function(columnIndex, rowArrayValue) {
var fldName = data['result']['main']['metadata']['fields'][columnIndex].name;
if (fldName == 'wood_specie_id'){
woodID = rowArrayValue;
}
if (fldName == 'wood_specie_desc'){
woodDesc = rowArrayValue;
alert($('#editWoodSpeDesc').val() +' '+ woodDesc); //program will not delete without this
if(selected == woodDesc){
codeFlag =1;
alert(woodID); //program will not delete without this
};
}
});
if (codeFlag == 1){
return false;
}
});
if (codeFlag == 1){
return false;
}
}
}
});
alert('program will not proceed without this alert');
if (codeFlag == 1) {
var datas = {
"SessionID": $.cookie("SessionID"),
"operation": "delete",
"wood_specie_id": woodID
};
alert(woodID);
alert(JSON.stringify(datas));
$.ajax({
type: 'GET',
url: 'processjson.php?' + $.param({path:'delete/woodSpecie',json:JSON.stringify(datas)}),
dataType: primeSettings.ajaxDataType,
success: function(data) {
if ('error' in data)
{
showMessage('ERROR: ' + data["error"]["msg"]);
}
else{
$('#tblWoodSpe').trigger('reloadGrid');
}
}
});
}
}
EDIT
My main purpose of putting an alert was just to know if my code really get the right ID of the description, and if would really go the flow of my code... But then i realized that it really wont work with it.