I am trying to implement a comment feature on my page. I have an itemID 123. on that page, I would like to display the comments that people have posted about itemID 123. However as of now, I am unable to display these comments on my page. There are no errors in the console.
Javascript:
function mywall() {
var url = serverURL() + "/viewwall.php"; //execute viewwall.php in the server
itemID = decodeURIComponent(getUrlVars()["itemID"]);
var JSONObject = {
"itemID": decodeURIComponent(getUrlVars()["itemID"])
};
$.ajax({
url: url,
type: 'GET',
data: JSONObject,
dataType: 'json',
contentType: "application/json; charset=utf-8",
success: function (arr) {
_mywallresult(arr); //success. execute _mywallresult()
},
error: function () {
validationMsg();
}
});
}
function _mywallresult(arr) {
var i;
//for all the shouts returned by the server
for (i = 0; i < arr.length; i++) {
//append the following:
//<b>
//time of posting </b>
//<br/>
//the message
//<br>
//userid
$("#wallcontentset").append("<b>" + arr[i].timeofposting + "</b><br/>" + arr[i].message + "<hr>" + arr[i].userid);
}
}
HTML:
<div data-role="content" class="ui-content" id="wallcontentset"></div>
Try the following :
success: function (response) {
_mywallresult(response.arr);
},
Each time data returns from the PHP file, it seems like the json object are doubled is some way!? When I run the script for the first time I get 5 rows which is the same amount of rows in the table. But the second time, I get the result twice! What have I done wrong in my script?
function readData() {
$.ajax({
url: "read.php",
type: "POST",
dataType: "json",
data: {
input: 1
},
cache: false,
success: function(data) {
var html = "";
for (i = 0; i < data.length; i++) {
html += "<tr><td>" + data[i].text + "</td></tr>";
}
$(".contentList table").append(html);
},
});
}
Try changing
$(".contentList table").append(html);
to
$(".contentList table").html(html);
.append() will just append more results to the end of the content inside the tag, while .html() will completely replace the content.
I have a total of 4 XML files in same format representing 4 different categories of project contents. However some projects does have more than 1 category.
I want to merge all 4 XML files using jQuery and display all projects contents in a single page within a , but due to the fact that some projects have more than 1 category, the displayed results show duplicates of project contents.
How do I remove duplicates within the combined extracted XML files?
Here is my jQuery Code:
XMLLIST = {
//general settings
xml1: 'xml/structural_steel.xml?' + Math.random(0,1), //solve ie weird caching issue
xml2: 'xml/building_work_id.xml?' + Math.random(0,1), //solve ie weird caching issue
xml3: 'xml/shear_stud_welding.xml?' + Math.random(0,1), //solve ie weird caching issue
xml4: 'xml/custom_solution.xml?' + Math.random(0,1), //solve ie weird caching issue
appendTo: '#list', //set the id/class to insert XML data
init: function () {
//jQuery ajax call to retrieve the XML file
$.ajax({
type: "GET",
url: XMLLIST.xml1,
dataType: "xml",
success: XMLLIST.parseXML
});
$.ajax({
type: "GET",
url: XMLLIST.xml2,
dataType: "xml",
success: XMLLIST.parseXML
});
$.ajax({
type: "GET",
url: XMLLIST.xml3,
dataType: "xml",
success: XMLLIST.parseXML
});
$.ajax({
type: "GET",
url: XMLLIST.xml4,
dataType: "xml",
success: XMLLIST.parseXML
});
}, // end: init()
parseXML: function (xml) {
//Grab every single ITEM tags in the XML file
var data;
data = $('item', xml).get();
var i = 1;
//Loop through all the ITEMs
$(data).each(function () {
//Parse data and embed it with HTML
XMLLIST.insertHTML($(this));
i++;
});
}, // end: parseXML()
insertHTML: function (item) {
//retrieve each of the data field from ITEM
var url = item.find('url').text();
var image = item.find('image').text();
var title = item.find('title').text();
var html;
//Embed them into HTML code
html = '<div class="item">';
html += '<img src="' + image + '"><br>';
html += '<span class="contentsubtitle">' + title + '</span><br><br>';
html += '</div>';
//Append it to user predefined element
$(html).appendTo(XMLLIST.appendTo);
}, // end: insertHTML()
}
//Run this script
XMLLIST.init();
I hope my code is correct. Had no data to test with, but I think the idea of it should be a bit more clear.
edited: Now working, version after receiving xml test-data
<html>
<head>
<title>asdasd</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.3/jquery.min.js"></script>
</head>
<body>
<div id="list">
</div>
<script>
XMLLIST = {
dataToLoad: [
'test.xml'
],
loadedData: [],
appendTo: '#list',
rand: function() {
return new Date().getTime();
},
loadData: function(file) {
$.ajax({
type: "GET",
url: file + "?" + XMLLIST.rand(),
dataType: "xml",
success: XMLLIST.parseXML,
error: function(r) {
console.error(r);
}
});
},
init: function () {
XMLLIST.dataToLoad.forEach(function(file) {
XMLLIST.loadData(file);
});
},
parseXML: function (xml) {
var data = $('item', xml).get();
$(data).each(function (i, value) {
var $value = $(value),
item = {
url: $value.find('url').text(),
image: $value.find('image').text(),
title: $value.find('title').text()
};
if (!XMLLIST.itemIsInList(item)) {
XMLLIST.loadedData.push(item);
XMLLIST.insertHTML(item);
}
});
},
itemIsInList: function(item) {
var hits = XMLLIST.loadedData.filter(function(value){
return XMLLIST.compareItem(item, value);
});
return hits.length > 0
},
compareItem: function(item1, item2) {
return item1.url === item2.url && item1.image === item2.image && item1.title === item2.title;
},
insertHTML: function (item) {
var html = '<div class="item">';
html += '<img src="' + item.image + '"><br>';
html += '<span class="contentsubtitle">' + item.title + '</span><br><br>';
html += '</div>';
$(html).appendTo(XMLLIST.appendTo);
}
};
XMLLIST.init();
</script>
</body>
</html>
You have a list, where you push your objects to. This list has a checkFunction "itemIsInList". Additionally you need a seperate check-function "compareItem", because indexOf won't work with objects
Managed to modify my original script by adding a masterArr for comparison of duplicated data received accross the 4 XMLs.
Here's the codes:
XMLLIST = {
//general settings
xml1: 'xml/structural_steel.xml?' + Math.random(0,1), //solve ie weird caching issue
xml2: 'xml/building_work_id.xml?' + Math.random(0,1), //solve ie weird caching issue
xml3: 'xml/shear_stud_welding.xml?' + Math.random(0,1), //solve ie weird caching issue
xml4: 'xml/custom_solution.xml?' + Math.random(0,1), //solve ie weird caching issue
appendTo: '#list', //set the id/class to insert XML data
//end general settings
masterArr: [],
init: function () {
//jQuery ajax call to retrieve the XML file
$.ajax({
type: "GET",
url: XMLLIST.xml1,
dataType: "xml",
success: XMLLIST.parseXML
});
$.ajax({
type: "GET",
url: XMLLIST.xml2,
dataType: "xml",
success: XMLLIST.parseXML
});
$.ajax({
type: "GET",
url: XMLLIST.xml3,
dataType: "xml",
success: XMLLIST.parseXML
});
$.ajax({
type: "GET",
url: XMLLIST.xml4,
dataType: "xml",
success: XMLLIST.parseXML
});
}, // end: init()
parseXML: function (xml) {
//Grab every single ITEM tags in the XML file
var data;
data = $('item', xml).get();
var i = 1;
//Loop through all the ITEMs
$(data).each(function () {
//Check if masterArr[] already contains a duplicate of the item by checking using the XML label <image> or any other value/label that is unique.
//Insert into masterArr[] if not duplicate and publish HTML if not duplicate.
var string1 = $(this).find('image').text();
if( jQuery.inArray(string1, XMLLIST.masterArr) == -1){
XMLLIST.masterArr.push(string1);
//Parse data and embed it with HTML
XMLLIST.insertHTML($(this));
};
//If it reached user predefined total of display item, stop the loop, job done.
//if (i == XMLLIST.display) return false;
i++;
});
}, // end: parseXML()
insertHTML: function (item) {
//retrieve each of the data field from ITEM
var url = item.find('url').text();
var image = item.find('image').text();
var title = item.find('title').text();
var html;
//Embed them into HTML code
html = '<div class="item">';
html += '<img src="' + image + '"><br>';
html += '<span class="contentsubtitle">' + title + '</span><br><br>';
html += '</div>';
//Append it to user predefined element
$(html).appendTo(XMLLIST.appendTo);
}, // end: insertHTML()
}
//Run this script
XMLLIST.init();
I've got a javascript document where I'm getting a json object and I want to create div's because I can have more than an instance on the json array. I'm creating an article , changing his innerHTML and adding it to the body but it doesn't get added.
$.ajax({
url: 'myURL',
type: "GET",
data: query,
dataType: 'json',
success: function (data) {
alert(data);
for (var i = 0; i < data.length; i++)
{
var _body = document.getElementsByTagName('body') [0];
alert(_body.innerHTML);
var article = document.createElement('article');
article.id = 'invoiceno'+i;
article.innerHTML = '<div id="client"></div><table class="cabecalho"><tr><th><span>Invoice #</span></th><td id="invoiceno"><span>invoiceno</span></td></tr><tr><th><span>Date</span></th><td id="invoicedate"><span>invoicedate</span></td></tr></table><table class="total"><tr><th><span >Total</span></th><td><span data-prefix>€</span><span id="tots">(TotalAPagar)</span></td></tr></table>';
alert(article.innerHTML);
_body.appendChild(article);
$("#invoiceno"+i).html(data[i].InvoiceNo);
$("#invoicedate"+i).html(data[i].InvoiceDate);
$("#client"+i).html(data[i].CompanyName);
$("#tots"+i).html(data[i].GrossTotal);
}
}
});
I am trying to populate a dropdownbox with data from a JSON page.
Here is the code I am using:
<script type="text/javascript" charset="utf-8">
$(document).ready(function () {
$.ajax({
url: "json/wcf.svc/GetTax",
dataType: 'json',
data: data
});
$($.parseJSON(data.msg)).map(function () {
return $('<option>').val(this.value).text(this.label);
}).appendTo('#taxList');
});
</script>
And here is what the json data returns:
{"d":"{\"16\":\"hello\",\"17\":\"world\"}"}
I am getting an error that "data is undefined." Do I have to somehow tell JQ how to read the json data?
Firstly, the data variable you are passing to the ajax call is not defined (well, not in the code sample you provided), and secondly the ajax call is happening asynchornously, so you need to do something with the returned data, i.e. via a success callback. Example:
$(document).ready(function () {
var data = //define here
$.ajax({
url: "json/wcf.svc/GetTax",
dataType: 'json',
data: data, // pass it in here
success: function(data)
{
$(data.msg).map(function () {
return $('<option>').val(this.value).text(this.label);
}).appendTo('#taxList');
}
});
});
also you shouldn't need to parse the data returned from the ajax call, as jQuery will automatically parse the JSON for you, ( should need the $.parseJSON(data.msg))
EDIT
Based on the interesting format of the JSON, and assuming that it cannot be changed, this should work (ugly though)
$(document).ready(function () {
var data = //define here
$.ajax({
url: "json/wcf.svc/GetTax",
dataType: 'json',
data: data, // pass it in here
success: function(data)
{
data = data.d.replace(/{/g, '').replace(/}/g, '').split(',');
var obj = [];
for (var i = 0; i < data.length; i++) {
obj[i] = {
value: data[i].split(':')[0].replace(/"/g, '').replace('\\', ''),
label: data[i].split(':')[1].replace(/"/g, '')
};
}
var htmlToAppend = "";
for (var j = 0; j < obj.length; j++) {
htmlToAppend += '<option value="' +
obj[j].value +
'">' + obj[j].label +
'</option>';
}
$('#taxList').append(htmlToAppend);
}
});
});
You need to use the success option to return the data.
<script type="text/javascript" charset="utf-8">
$(document).ready(function () {
$.ajax({
url: "json/wcf.svc/GetTax",
dataType: 'json',
success: function(data){
$(data.msg).map(function () {
return $('<option>').val(this.value).text(this.label);
}).appendTo('#taxList');
}
});
});
</script>