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Clear previous results from query

Through the attached code I do a search on youtube based on the username and the results are shown. If I search twice, the results add up. I would like previous results to be deleted. I try with htmlString = card; but it show only one result.Thanks to everyone who wants to help me solve this problem.
var musicCards = [];
jQuery(document).ready(function() {
jQuery("#searchButton").on("click", function() {
var query = jQuery("#queryInput").val();
if (query != "") {
loadYoutubeService(query);
console.log(query + "");
}
});
});
function loadYoutubeService(query) {
gapi.client.load('youtube', 'v3', function() {
gapi.client.setApiKey('ADADADADADA');
search(query);
});
}
function search(query) {
var request = gapi.client.youtube.search.list({
part: 'snippet',
q: query,
type: 'channel',
maxResults: 15
});
request.execute(function(response) {
jQuery.each(response.items, function(i, item) {
if (!item['']) {
var musicCard = {};
musicCard._id = item['snippet']['customUrl'];
musicCard.title = item['snippet']['title'];
musicCard.linkprofilo = item['snippet']['channelId'];
musicCard.url = "https://www.youtube.com/channel/";
musicCard.description = item['snippet']['description'];
musicCard.immagine = item['snippet']['thumbnails']['high']['url'];
musicCards.push(musicCard);
}
});
renderView();
});
}
function renderView() {
var htmlString = "";
musicCards.forEach(function(musicCard, i) {
var card = createCard(musicCard._id, musicCard.title, musicCard.description, musicCard.url,musicCard.immagine, musicCard.linkprofilo);
htmlString += card;
});
jQuery('#youtube-utente').html(htmlString);
}
function createCard(_id, title, description, url, immagine, linkprofilo) {
var card =
'<div class="card">' +
'<div class="info">' +
'<img src="' + immagine + '" alt="' + description + '">' +
'</div>' +
'<div class="content">Clicca per selezionare:' +
'<h3>' + title + '</h3>' +
'<a class="seleziona" href="' + url +linkprofilo+'">'+ url +linkprofilo+'</a>' +
'<p>' + description + '</p>' +
'</div>' +
'</div>';
return card;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.0/jquery.min.js"></script>

Solved using :
request.execute(function(response) {
musicCards.length = 0; // clear array

I have javascript code to view a news from RSS as a vertical list. I need help to move the list of topics as horizontal one by one, in one line

I have javascript code to view a news from RSS as a vertical list.
(function ($) {
$.fn.FeedEk = function (opt) {
var def = $.extend({
MaxCount: 5,
ShowDesc: true,
ShowPubDate: true,
DescCharacterLimit: 0,
TitleLinkTarget: "_blank",
DateFormat: "",
DateFormatLang:"en"
}, opt);
var id = $(this).attr("id"), i, s = "", dt;
$("#" + id).empty();
if (def.FeedUrl == undefined) return;
$("#" + id).append('<img src="loader.gif" />');
var YQLstr = 'SELECT channel.item FROM feednormalizer WHERE output="rss_2.0" AND url ="' + def.FeedUrl + '" LIMIT ' + def.MaxCount;
$.ajax({
url: "https://query.yahooapis.com/v1/public/yql?q=" + encodeURIComponent(YQLstr) + "&format=json&diagnostics=false&callback=?",
dataType: "json",
success: function (data) {
$("#" + id).empty();
if (!(data.query.results.rss instanceof Array)) {
data.query.results.rss = [data.query.results.rss];
}
$.each(data.query.results.rss, function (e, itm) {
s += '<li><div class="itemTitle"><a href="' + itm.channel.item.link + '" target="' + def.TitleLinkTarget + '" >' + itm.channel.item.title + '</a></div>';
if (def.ShowPubDate){
dt = new Date(itm.channel.item.pubDate);
s += '<div class="itemDate">';
if ($.trim(def.DateFormat).length > 0) {
try {
moment.lang(def.DateFormatLang);
s += moment(dt).format(def.DateFormat);
}
catch (e){s += dt.toLocaleDateString();}
}
else {
s += dt.toLocaleDateString();
}
s += '</div>';
}
if (def.ShowDesc) {
s += '<div class="itemContent">';
if (def.DescCharacterLimit > 0 && itm.channel.item.description.length > def.DescCharacterLimit) {
s += itm.channel.item.description.substring(0, def.DescCharacterLimit) + '...';
}
else {
s += itm.channel.item.description;
}
s += '</div>';
}
});
$("#" + id).append('<ul class="feedEkList">' + s + '</ul>');
}
});
};
})(jQuery);
I need help to move the list of topics as horizontal one by one, in one line. by used javascript code. this code display just 5 topics, which I need it, but I have problem to how can I movement it as horizontal.

How to convert the values in an array to strings and send to php?

I have a javascript file here.What it does is,when a user selects seats accordings to his preference in a theater layout,the selected seats are stored in an array named "seat".This code works fine until function where the selected seats are shown in a window alert.But from there onwards,the code doesn't seem to do anything.
After the above window alert, I've tried to serialize the above array and send it to the "confirm.php" file.But it does not show anything when echoed the seats.
Here is the js code.
<script type="text/javascript">
$(function () {
var settings = {
rows: 6,
cols: 15,
rowCssPrefix: 'row-',
colCssPrefix: 'col-',
seatWidth: 80,
seatHeight: 80,
seatCss: 'seat',
selectedSeatCss: 'selectedSeat',
selectingSeatCss: 'selectingSeat'
};
var init = function (reservedSeat) {
var seat = [], seatNo, className;
for (i = 0; i < settings.rows; i++) {
for (j = 0; j < settings.cols; j++) {
seatNo = (i + j * settings.rows + 1);
className = settings.seatCss + ' ' + settings.rowCssPrefix + i.toString() + ' ' + settings.colCssPrefix + j.toString();
if ($.isArray(reservedSeat) && $.inArray(seatNo, reservedSeat) != -1) {
className += ' ' + settings.selectedSeatCss;
}
seat.push('<li class="' + className + '"' +
'style="top:' + (i * settings.seatHeight).toString() + 'px;left:' + (j * settings.seatWidth).toString() + 'px">' +
'<a title="' + seatNo + '">' + seatNo + '</a>' +
'</li>');
}
}
$('#place').html(seat.join(''));
};
var jArray = <?= json_encode($seats) ?>;
init(jArray);
$('.' + settings.seatCss).click(function () {
if ($(this).hasClass(settings.selectedSeatCss)) {
alert('This seat is already reserved!');
} else {
$(this).toggleClass(settings.selectingSeatCss);
}
});
$('#btnShowNew').click(function () {
var seat = [], item;
$.each($('#place li.' + settings.selectingSeatCss + ' a'), function (index, value) {
item = $(this).attr('title');
seat.push(item);
});
window.alert(seat);
});
$('#btnsubmit').click(function () {
var seat = [], item;
$.each($('#place li.' + settings.selectingSeatCss + ' a'), function (index, value) {
item = $(this).attr('title');
seat.push(item);
var seatar = JSON.stringify(seat);
$.ajax({
method: "POST",
url: "confirm.php",
data: {data: seatar}
});
});
});
});
</script>
Can somebody help me figure it out what's wrong in here?

Please Add content type as json.
$.ajax({
method: "POST",
url: "confirm.php",
contentType: "application/json"
data: {data: seatar}
});
For testing you can print file_get_contents('php://input') as this works regardless of content type.

No response from 2nd ajax request

I am getting no response from a 2nd ajax request. I am trying to display an google information window on google map that contains only a single tab when a certain criteria is matched otherwise I want to display two tabs. I thought I could easily implement this with another marker function with tailored behaviour, but I receive no response. Any help on this is always appreciated. Thanks in advance.
// click event handler
google.maps.event.addListener(marker, 'click', function () {
var ecoli_array = [];
var marker = this;
var str = "";
var beach_status; // beach_status flag
// load gif before ajax request completes
infoWindow.setContent('<img src="img/loading.gif" alt="loading data"/>');
infoWindow.open(map, marker);
// override beach data when a beach is closed
beach_status = this.getBeachStatus();
beach_status = beach_status.toLowerCase();
if (beach_status === 'closed') {
str = [
'<h1>' + this.beach_name + '</h1>',
'<h3>' + this.beach_region + '</h3>',
'<p>' + this.status_description + '</p>'
].join('');
infoWindow.setContent(str);
infoWindow.open(map, marker); // changed this to marker to resolve issue
} else {
// chained ajax invocations
if ( this.displayOnlyAlgaeResults === false ) {
// Standard Use case
$.when(this.getEcoliData(), this.getAlgaeData()).done(function (data1, data2) {
str += marker.getHeader() + marker.afterGetEcoliData(data1[0].rows);
str += marker.afterGetAlgaeData(data2[0].rows);
infoWindow.setContent(str);
infoWindow.open(map, marker); // changed this to marker to resolve issue
// render tabs UI
$(".tabs").tabs({ selected: 0 });
}); // end when call
}else{
// Algae Only Use Case
var d = this.getOnlyAlgaeData();
console.log(d);
$.when( this.getOnlyAlgaeData() ).done(function ( rsp ) {
//console.log(rsp);
str += marker.getAlgaeHeader() + marker.afterGetOnlyAlgaeData( rsp[0].rows );
//str += marker.afterGetOnlyAlgaeData(data2[0].rows);
infoWindow.setContent(str);
infoWindow.open(map, marker); // changed this to marker to resolve issue
// render tabs UI
$(".tabs").tabs({ selected: 0 });
}); // end when call
} // end inner if else
} // end outer if else
}); // End click event handler
getOnlyAlgaeData: function () { // begin getAlgaeData
var obj;
var queryURL = "https://www.googleapis.com/fusiontables/v1/query?sql=";
var queryTail = '&key=xxxxx&callback=?';
var whereClause = " WHERE 'Beach_ID' = " + this.beach_id;
var query = "SELECT * FROM xxxx "
+ whereClause + " ORDER BY 'Sample_Date' DESC";
var queryText = encodeURI(query);
// ecoli request
return $.ajax({
type: "GET",
url: queryURL + queryText + queryTail,
cache: false,
dataType: 'jsonp'
});
}, // end getAlgaeData method
// added afterGetOnlyAlgaeData
afterGetOnlyAlgaeData: function (data) {
var algae_rows_str = "";
algae_rows = data;
var algae_rows_str = [
'<div id="tab-1">',
'<h1>' + this.beach_name + '</h1>',
'<h3>' + this.beach_region + '</h3>',
'<table id="algae_table " class="data">',
'<tr>',
'<th>Sample Date</th>',
'<th class="centerText">Blue Green Algae Cells <br/>(cells/ mL) </th>',
'<th>Recreational Water Quality Objective <br/>(100,000 cells/mL)</th>',
'<th class="centerText">Algal Toxin Microcystin <br/> (&#956g/L)</th>',
'<th>Recreational Water Quality Objective <br/> (20 &#956g/L)</th>', // &mu instead of u
'</tr>'
].join('');
//console.log(algae_rows);
if (typeof algae_rows === 'undefined') {
algae_rows_str = [
'<div id="tab-1">',
'<h1>' + this.beach_name + '</h1>',
'<h3>' + this.beach_region + '</h3>',
'<p>This season, no algal blooms have been reported at this beach.</p>',
'</div>',
'</div>',
'</div>',
'</div>'
].join('');
} else {
for (var i = 0; i < algae_rows.length; i++) {
//console.log(rows[i]);
//algae_rows_str += '<tr><td>' + formatDate(algae_rows[i][2]) + '</td><td class="centerText">' + checkAlgaeToxinCount(algae_rows[i][3]) + '</td><td>' + checkAlgaeToxinForAdvisory(algae_rows[i][4]) + '</td><td class="centerText">' + checkAlgaeCount(algae_rows[i][5]) + '</td><td>' + checkBlueGreenAlgaeCellsForAdvisory(algae_rows[i][6]) + '</td></tr>';
algae_rows_str += '<tr><td>' + formatDate(algae_rows[i][2]) + '</td><td class="centerText">' + checkAlgaeCount(algae_rows[i][5]) + '</td><td>' + checkBlueGreenAlgaeCellsForAdvisory(algae_rows[i][6]) + '</td><td class="centerText">' + checkAlgaeToxinCount(algae_rows[i][3]) + '</td><td>' + checkAlgaeToxinForAdvisory(algae_rows[i][4]) + '</td></tr>';
}
algae_rows_str += '</table>'
algae_rows_str += '</div></div></div>';
//return algae_rows_str;
} //end if
return algae_rows_str;
}, // end afterGetOnlyAlgaeData
}); // ====================end marker
I essentially copied two identical functions that work, gave them a slightly different name and customized each function to display 1 tab instead of two, but I get no response.
Thoughts?

thanks for the help, it ended up being something simple.
I was incorrectly referencing the response. Ie. I change the following line:
str += marker.getAlgaeHeader() + marker.afterGetOnlyAlgaeData( rsp[0].rows );
to
str += marker.getAlgaeHeader() + marker.afterGetOnlyAlgaeData( rsp.rows );
Geez!

Hiding <p> field in javascript

Here's my code for gathering titles/posts from reddit's api:
$.getJSON("http://www.reddit.com/search.json?q=" + query + "&sort=" + val + "&t=" + time, function (data) {
var i = 0
$.each(data.data.children, function (i, item) {
var title = item.data.title
var url = item.data.url
var id = item.data.id
var subid = item.data.subreddit_id
var selftext = item.data.selftext
var selftextpost = '<p id="post' + i + '">' + selftext + '</p><br>'
var post = '<div>' + '' + title + '' + '</div>'
results.append(post)
results.append(selftextpost)
i++
});
});
Basically every post (selftext) is assigned a different paragraph id (post0, post1, post2, etc) for every result that's pulled. I'm also going to create a "hide" button that follows the same id scheme based on my i variable (submit0, submit1, submit2, etc). I want to write a function so that based on which button they click, it will hide the corresponding paragraph. I've tried doing an if statement that's like if("#hide" + i) is clicked, then hide the corresponding paragraph, but obviously that + i doesn't work. How else can I tackle this?

Could you try something like the below?
showhide = $("<a class='hider'>Show/Hide</a>");
results.append(showhide);
$(showhide).click(function() {
$(this).next().toggle();
}
Alternatively:
$.each(data.data.children, function (i, item) {
var title = item.data.title
var url = item.data.url
var id = item.data.id
var subid = item.data.subreddit_id
var selftext = item.data.selftext
var selftextpost = '<p id="post' + i + '">' + selftext + '</p><br>'
var showhide = $("<a class='hider" + i + "'>Show/Hide</a>");
var post = '<div>' + '' + title + '' + '</div>'
results.append(post)
results.append(selftextpost)
results.append(showhide);
$(showhide).click(function() {
$(this).next().toggle();
});
i++
});