I'll say right off the bat that this question seems to address the same situation, but for the life of me I'm not seeing what the solution/answer is there. Perhaps someone just needs to "spell it out" more clearly for me!
I have the following function:
function CheckIfUrlExists(checkUrl) {
var exists = '';
$.ajax({
type: 'POST',
url: '../scripts/branchAdmin.php',
data: {checkUrl: checkUrl},
cache: false,
success: function(response) {
console.log('response: ' + response);
if (response === 'true') {
exists = 'true';
} else if (response === 'false') {
exists = 'false';
}
},
error: function(response) {
// return false and display error(s) from server
exists = 'false';
}
});
console.log('exists: ' + exists); // always displays empty string, regardless of what the php script returns
return exists;
}
And I'm calling it with this:
var exists = CheckIfUrlExists($tr.find('input.editUrl').val());
if (exists === 'false') {
//if (!CheckIfUrlExists($tr.find('input.editUrl').val())) {
// New URL entered, verify user want to save it
$('#confirmAddNewUrlDialog').data('row', $tr).dialog('open');
... // code to handle result
}
How can I get the "CheckIfUrlExist() function to return a true or false (or any value for that matter) so I can use it in the above code?
Make the ajax call async option to false. then you'll get the result.
see the link https://stackoverflow.com/a/1531710/399414
$.ajax({
type: 'POST',
async: false,
url: '../scripts/branchAdmin.php',
...
Related
I am trying to only parse the information related to a certain "market_name" however I cannot seem to figure out how. The api is located at https://stocks.exchange/api2/ticker which displays information related to the entire exchange. I simply need all of the information returned relating to the "market_name" I am searching for such as ETH_BTC
Ajax:
$.ajax({
url: "https://stocks.exchange/api2/ticker",
dataType: 'json',
success: function(data) {
last = data.last;
console.log(last);
$("#btcprice").text(last);
},
error: function() {
//alert("Was unable to get info!");
}
});
That's because data is an array of objects, not a single object.
Try:
$.ajax({
url: "https://stocks.exchange/api2/ticker",
dataType: 'json',
success: function (data) {
// find object
var market = data.find(function (obj) {
return obj.market_name == 'ETH_BTC';
});
$("#btcprice").text(market.last);
},
error: function() {
//alert("Was unable to get info!");
}
});
Use array filter() method to filter out the record having market_name as ETH_BTC.
array.filter(obj => {
return obj.market_name == 'ETH_BTC'
});
DEMO
var jsonObj = [{"min_order_amount":"0.00000010","ask":"0.00000017","bid":"0.0000001","last":"0.00000010","lastDayAgo":"0.00000009","vol":"154955.9586604","spread":"0","buy_fee_percent":"0","sell_fee_percent":"0","market_name":"ATR_BTC","market_id":338,"updated_time":1527789301,"server_time":1527789301},{"min_order_amount":"0.00000010","ask":"0.000032","bid":"0.000012","last":"0.00003200","lastDayAgo":"0.000065","vol":"372.5011152","spread":"0","buy_fee_percent":"0","sell_fee_percent":"0","market_name":"ETH_BTC","market_id":35,"updated_time":1527789301,"server_time":1527789301},{"min_order_amount":"0.00000010","ask":"0.00003595","bid":"0.00003","last":"0.00003000","lastDayAgo":"0.00003001","vol":"26.44435669","spread":"0","buy_fee_percent":"0","sell_fee_percent":"0","market_name":"ARDOR_BTC","market_id":262,"updated_time":1527789301,"server_time":1527789301}];
var res = jsonObj.filter(obj => {
return obj.market_name == 'ETH_BTC'
});
console.log(res);
$.ajax({
url: "https://stocks.exchange/api2/ticker",
dataType: 'json',
success: function(data) {
var results = [];
var searchField = "market_name";
var searchVal = "ETH_BTC";
for (var i=0 ; i < data.length ; i++)
{
if (data[i][searchField] == searchVal) {
results.push(data[i]);
}
}
$("#btcprice").text(results[0].last);
},
error: function() {
//alert("Was unable to get info!");
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Here is a simple code in which you find what you want simply just change searchVal statically or dynamically according to your need......
So I'm working on some demoware and I have two AJAX calls, the first is just a last modified date, to let me know whether to fetch data from the second. This works, but I feel like there's a smarter way to do this for real applications, and I'm just a UI monkey trying to come up in the world, any advice is much appreciated.
componentDidMount() {
this.getJson();
setInterval(this.getJson.bind(this), 1000);
}
getJson() {
const el = this;
const isModified = (date) => {
let mod = false;
if (this.state.lastModified == date) {
console.log('no change');
} else {
mod = true;
console.log({
'previously modified': this.state.lastModified,
'newly modified': date
});
el.setState({lastModified: date});
}
return mod;
}
this.serverRequest = $.ajax({
url: 'URL_LAST_MODIFIED',
success: function(result) {
const lastModified = $.parseJSON(result).LastModifiedDateTime;
if (isModified(lastModified)) {
$.ajax({
url: 'URL_DATA',
success: function(result2) {
const result2Obj = $.parseJSON(result2);
el.setState({data: result2Obj});
},
error: function(xhr, status, err) {
alert(err.toString());
}
})
}
},
error: function(xhr, status, err) {
}
});
}
I think it is realted to this:
https://github.com/reactjs/redux/issues/1676
The idea is create a action for the first ajax call... and on success dispatch another action to execute the second call.
This is my code:
var title = 'test'
function onlineStatus(callback){
$.ajax({
url: "https://blabla,
cache: false,
success: callback
});
onlineStatus(function(test) {
// doing stuff with `test`
$('#forTest').attr('title', title);
});
The problem is that the onlineStatus call doesn't see title, which is correct, because it is out of scope. Is there a way to pass it into the function, so that the title is seen?
function statusCheck (test) {
console.log(test);
}
function onlineStatus (callback) {
callback (arguments[1]);
}
onlineStatus (statusCheck, "test");
I'm getting back the following JSON:
{"array":[],"object":null,"bool":false}
And I'm testing it with the following, seemingly exhaustive, if statement:
$.ajax({
type: "GET",
url: "/ajax/rest/siteService/list",
dataType: "json",
success: function (response) {
var siteArray = response.array;
// Handle the case where the user may not belong to any groups
if (siteArray === null || siteArray=== undefined || siteArray=== '' || siteArray.length === 0) {
window.alert('hi');
}
}
});
But the alert is not firing. :[
Use $.isArray() to check whether an object is an array. Then you can check the truthness of the length property to see whether it is empty.
if( !$.isArray(siteArray) || !siteArray.length ) {
//handler either not an array or empty array
}
Two empty arrays are not the same as one another, for they are not the same object.
var a = [];
if (a === []){
// This will never execute
}
Use if (siteArray.length==0) to see if an array is empty, or more simply if (!siteArray.length)
I have a very complicated post using jquery validation and an AJAX post that gets a JSON response back from the server and puts it in a jqGrid... But it seems as though my onsuccess is never being called at any point...
$(document).ready(function () {
$("#formSearchByMRN").validate({
rules: {
MRN: { required: true, minLength: 6 }
},
messages: {
MRN: 'Please Enter a Valid MRN'
},
submmitHandler: function (form) {
e.preventDefault();
animateLoad();
debugger;
var theURL = form.action;
var type = form.methd;
var data = $(this).serialize();
$.ajax({
url: theURL,
type: type,
data: data,
dataType: "json",
success: function (result) {
debugger;
var data = result;
if (data.split(':')[0] == "Empty record") {
$("#list").unblock();
$('#resultDiv').html('<b><p style="color: #ff00ff">' + data + '</p></b>');
setTimeout(function () {
$('#resultDiv').html("");
}, 10000);
}
else {
binddata(data);
}
}
});
return false;
}
});
});
It would seem I never get into the submmitHandler. Event though I manage to get to my server side function and it does return, it prompts my UI to save a file which contains the JSON results...
No good.
Am I going about validating my form before my AJAX post the wrong way? Does anybody have any advice about best practices in validating AJAX posts?
UPDATE... MARK R. This is what I attempted. It seems as though I never get in to the success function... My suspicion is that I am not really posting via ajax, but instead doing a full post. I don't understand why.
$('#submitMRN').click(function () {
$("#formSearchByMRN").validate({
rules: {
MRN: { required: true, minLength: 6 }
},
messages: {
MRN: 'Please Enter a Valid MRN'
}
});
if ($('#submitMRN').valid()) {
$("#list").block({ message: '<img src="../../Images/ajax-loader.gif" />' });
$.ajax({
url: $('#submitMRN').action,
type: $('#submitMRN').method,
data: $('#submitMRN').serialize(),
dataType: "json",
success: function (result) {
debugger;
var data = result;
if (data.split(':')[0] == "Empty record") {
$("#list").unblock();
$('#resultDiv').html('<b><p style="color: #ff00ff">' + data + '</p></b>');
setTimeout(function () {
$('#resultDiv').html("");
}, 10000);
}
else {
binddata(data);
}
}
});
}
});
$('#SubmitButton').click(function (){
//Check that the form is valid
$('#FormName').validate();
//If the Form is valid
if ($('#FormName').valid()) {
$.post(...........
}
else {
//let the user fix their probems
return false;
}
});//$('#SubmitButton').click(function (){