innerHTML is not getting updated - javascript

I am trying to get the data from the string and i want to display it in my html.
Here is the code what i tried
var jsn = {
"channels": [{
"name": "video1",
"image": "images/bodyguard.jpg"
}, {
"name": "video2",
"image": "images/bodyguard.jpg"
}, {
"name": "video3",
"image": "images/bodyguard.jpg"
}, {
"name": "video4",
"image": "images/bodyguard.jpg"
}, {
"name": "video5",
"image": "images/bodyguard.jpg"
}]
};
var id = document.getElementById("menu_list");
var inHtm = "";
var channels = jsn.channels.length;
var cha = jsn.channels;
alert("channels : " + channels);
if (channels != undefined) {
for (var i = 0, len = channels; i < len; ++i) {
var item = cha[i].name;
alert(item);
//var name = item.name;
var image = cha[i].image;
inHtm += '<div class="menu"><a href="javascript:void(0);" onkeydown="Main.keyDown();" >';
inHtm += '<img src="' + image + '"/>';
inHtm += '</a></div>';
}
alert(inHtm);
in1.innerHtml = inHtm;
}
My Fiddle
It is assigning the values to inHtm but my innerHTML is not getting updated. I want to display the image in my html

This:
in1.innerHtml = inHtm;
Should be:
id.innerHTML = inHtm;
Your object is id not in1 and the property is innerHTML not innerHtml.
Also I suggest using console.log() for degbugging instead of alert(). alerts are painful especially in loops, and with console.log() you can dump entire objects, whereas alert will just show "object".
Corrected fiddle

Related

jquery+on iterating loop how can i know which element is clicked

I am having a list which is nothing but country flag, country name and country code which actually i derived from JSON
and i had written for loop to render the html elements like this
data =
[
{
"name": "INDIA ",
"code": "93",
"url": 'https://www.countryflags.io/in/flat/64.png'
}, {
"name": "JAPAN ",
"code": "355",
"url": 'https://www.countryflags.io/jp/flat/64.png'
}]
for (var i = 0; i < data.length; i++) {
var countryName = data[i].name;
var countrtDialCode = data[i].code;
var countryUrl = data[i].url;
var badge = document.createElement('div');
badge.className = 'badge';
badge.innerHTML =
'<div id="listSection">'+
'<div style="display:flex">'+
'<div id="flagSection">'+'<img style="height:10px;width:20px;margin-top:4px;" src='+countryUrl+'>'+'</div>'+' '+
'<div id="nameSection">' + countryName + '</div>' +' '+
'<div id="codeSection">' + countrtDialCode + '</div>'
+'</div>'+
'</div>'
document.getElementById('countries-list').appendChild(badge);
}
also i have a divs section
<div id="inputSection"> </div>
<div id="countries-list">
</div>
and i have done like when you click on input section the list will come and i can choose from the list and i need ONLY the flag should be shown
<script type="text/javascript">
$(document).ready(function(){
$('#countries-list').addClass('hideSection').removeClass('showSection')
});
$('#inputSection').click(function(){
$('#countries-list').addClass('showSection').removeClass('hideSection')
})
</script>
so when i click india JSON from list , i should display indian flag in inputSection again if i click input section list should come and again if i choose NEPAL, indian flag should be replaced with NEPAL flag.
Have 2 problem.First one i am unable to write click function in INNERHTML to identify which country clicked and second how to retrieve the flag section and show it in inputSection.
Any fiddle will be highly helpful and thankful
If all you need is a clone of the flag section in the input section, then this is all you need:
$('.listSection').on('click', function() {
$('#inputSection').html( $('.flagSection', this).clone() );
});
However, you have to convert every occurrence of id in the HTML in your JS to class, as in the working demo below. Id attribute values should be unique.
$(function() {
const data = [{
"name": "INDIA ",
"code": "93",
"url": 'https://www.countryflags.io/in/flat/64.png'
}, {
"name": "JAPAN ",
"code": "355",
"url": 'https://www.countryflags.io/jp/flat/64.png'
}];
for (var i = 0; i < data.length; i++) {
var countryName = data[i].name;
var countrtDialCode = data[i].code;
var countryUrl = data[i].url;
var badge = document.createElement('div');
badge.className = 'badge';
badge.innerHTML =
'<div class="listSection">'+
'<div style="display:flex">'+
'<div class="flagSection">'+'<img style="height:10px;width:20px;margin-top:4px;" src='+countryUrl+'>'+'</div>'+' '+
'<div class="nameSection">' + countryName + '</div>' +' '+
'<div class="codeSection">' + countrtDialCode + '</div>'
+'</div>'+
'</div>'
document.getElementById('countries-list').appendChild(badge);
}
$('.listSection').on('click', function() {
console.log( {name: $('.nameSection',this).text(), code: $('.codeSection', this).text()} );
$('#inputSection').html( $('.flagSection', this).clone() );
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="inputSection"> </div>
<div id="countries-list">
</div>
NOTE
Since there's not mention in the documentation of .html( jQueryObject ) even thought it works in the above demo, I'll provide an alternative that uses .empty() and .append() methods:
$('#inputSection').empty().append( $('.flagSection', this).clone() );

Dynamically change carousel images based on click event

I have 3 elements arranged in a row. I want to show a carousel pop-up on click of the columns in the row. The issue is I am not able to change the images of carousal based on selected column element.
Here is my complete code:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<style>
.carousel-inner > .item > img,
.carousel-inner > .item > a > img {
width: 70%;
margin: auto;
}
</style>
</head>
<script>
function process() {
var shops = JSON.parse('{ "id": "shopping", "categories": [ { "id": "Amazon", "name": "Amazon", "link": "https://images-na.ssl-images-amazon.com/images/G/01/SellerCentral/legal/amazon-logo_transparent._CB303899249_.png", "images": [ { "href": "https://images-na.ssl-images-amazon.com/images/G/01/credit/img16/CBCC/marketing/marketingpage/products._V524365396_.png" }, { "href": "http://static4.uk.businessinsider.com/image/575adbe2dd0895c4098b46ba/the-50-most-popular-products-on-amazon.jpg" } ] }, { "id": "Google", "name": "Google", "link": "http://pngimg.com/uploads/google/google_PNG19644.png", "images": [ { "href": "https://www.clipartmax.com/png/middle/147-1476512_google-google-products-logos-png.png" }, { "href": "https://xvp.akamaized.net/assets/illustrations/unblock-google/unblock-google-with-a-vpn-fc1e32f59d9c50bae315c2c8506a91e2.png" } ] }, { "id": "Apple", "name": "Apple", "link": "https://upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Apple_Logo.svg/2000px-Apple_Logo.svg.png", "images": [ { "href": "https://c.slashgear.com/wp-content/uploads/2018/03/apple-mfi-logos-update-2018-980x620.jpg" }, { "href": "https://support.apple.com/library/content/dam/edam/applecare/images/en_US/applemusic/itunes-apple-logo-apple-music-giftcard.jpg" } ] } ] }');
var row = 1;
var content = "";
shops = shops.categories;
for(var i=0; i< shops.length; i++) {
if(row == 1) {
content += '<div class="row">'
}
content += '<div class="col-md-4 col-sm-12" data-toggle="modal" onclick="processCarousel(shops[i])" data-target="#myModal">';
content += '<img style="border: 1px solid red" src="'+shops[i].link+'" width="100%" height="100%"/></div>';
if(row == 3) {
row = 0;
content += '</div>';
}
row++;
}
document.getElementById("placeholder").innerHTML = content;
processCarousel();
}
function processCarousel(input) {
alert(input);
var m = ['img_chania.jpg','img_chania2.jpg', 'img_flower.jpg','img_flower2.jpg'];
var carouselInner = document.getElementById("carousel-inner");
var carouselIndicators = document.getElementById("carousel-indicators");
var innerContent = "";
var indicatorsContent = "";
for(var i=0 ; i< m.length ; i++) {
var c = "";
if(i == 0) {
c = " active";
}
innerContent += '<div class="item'+c+'"><img src="'+m[i]+'"><div class="carousel-caption"></div> </div>';
indicatorsContent += '<li class='+c+'data-target="#carousel-example-generic" data-slide-to="'+i+'"></li>';
}
carouselInner.innerHTML = innerContent;
carouselIndicators.innerHTML = indicatorsContent;
var carouselExampleGeneric = document.getElementById("carousel-example-generic");
carouselExampleGeneric.carousel();
}
</script>
</html>
The above code generates the below output:
On click of any image it is loading the carousal but the images of carousal are fixed to my array elements var m = ['img_chania.jpg','img_chania2.jpg', 'img_flower.jpg','img_flower2.jpg']; as mentioned in my above code.
But I want to show only the selected images which are present in my input json shops.categories[selectedItem].images
I tried using onclick javascript event on column element, but the code is not recognising it. What is the correct way to do this.
I want to do this using plain javascript.
First you need to get rid of the call to processCarousel(); in line 39.
Your main problem is, that inside of your content variable you are passing the string of the argument variable rather than the argument itself. Try this instead:
content += '<div class="col-md-4 col-sm-12" data-toggle="modal" onclick="processCarousel(' + i + ')" data-target="#myModal">';
This way you are just passing the index of the category that needs to be rendered.
Then you will have to have the shops object available inside of the processCarousel function as well, so I moved it up, outside the function scope.
This will result in further problems inside of you processCarousel function. You will have to set your your images like this var m = shops[i].images; instead of var m = ['img_chania.jpg', 'img_chania2.jpg', 'img_flower.jpg', 'img_flower2.jpg'];
This will throw another error further down.
innerContent += '<div class="item' + c + '"><img src="' + m[i] + '"><div class="carousel-caption"></div> </div>'; will not work. Instead you will have to use m[i].href as your source inside your image tag.
This will now pass the config to the Carousel which will then render just fine.
You might want to think about giving variables speaking names and avoiding variables like 'm'.
var shops = JSON.parse('{ "id": "shopping", "categories": [ { "id": "Amazon", "name": "Amazon", "link": "https://images-na.ssl-images-amazon.com/images/G/01/SellerCentral/legal/amazon-logo_transparent._CB303899249_.png", "images": [ { "href": "https://images-na.ssl-images-amazon.com/images/G/01/credit/img16/CBCC/marketing/marketingpage/products._V524365396_.png" }, { "href": "http://static4.uk.businessinsider.com/image/575adbe2dd0895c4098b46ba/the-50-most-popular-products-on-amazon.jpg" } ] }, { "id": "Google", "name": "Google", "link": "http://pngimg.com/uploads/google/google_PNG19644.png", "images": [ { "href": "https://www.clipartmax.com/png/middle/147-1476512_google-google-products-logos-png.png" }, { "href": "https://xvp.akamaized.net/assets/illustrations/unblock-google/unblock-google-with-a-vpn-fc1e32f59d9c50bae315c2c8506a91e2.png" } ] }, { "id": "Apple", "name": "Apple", "link": "https://upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Apple_Logo.svg/2000px-Apple_Logo.svg.png", "images": [ { "href": "https://c.slashgear.com/wp-content/uploads/2018/03/apple-mfi-logos-update-2018-980x620.jpg" }, { "href": "https://support.apple.com/library/content/dam/edam/applecare/images/en_US/applemusic/itunes-apple-logo-apple-music-giftcard.jpg" } ] } ] }');
var row = 1;
var content = "";
shops = shops.categories;
function process() {
for (var i = 0; i < shops.length; i++) {
if (row == 1) {
content += '<div class="row">'
}
content += '<div class="col-md-4 col-sm-12" data-toggle="modal" onclick="processCarousel(' + i + ')" data-target="#myModal">';
content += '<img style="border: 1px solid red" src="' + shops[i].link + '" width="100%" height="100%"/></div>';
if (row == 3) {
row = 0;
content += '</div>';
}
row++;
}
document.getElementById("placeholder").innerHTML = content;
}
function processCarousel(i) {
//var m = ['img_chania.jpg', 'img_chania2.jpg', 'img_flower.jpg', 'img_flower2.jpg'];
var m = shops[i].images;
var carouselInner = document.getElementById("carousel-inner");
var carouselIndicators = document.getElementById("carousel-indicators");
var innerContent = "";
var indicatorsContent = "";
for (var i = 0; i < m.length; i++) {
var c = "";
if (i == 0) {
c = " active";
}
innerContent += '<div class="item' + c + '"><img src="' + m[i].href + '"><div class="carousel-caption"></div> </div>';
indicatorsContent += '<li class=' + c + 'data-target="#carousel-example-generic" data-slide-to="' + i + '"></li>';
}
carouselInner.innerHTML = innerContent;
carouselIndicators.innerHTML = indicatorsContent;
var carouselExampleGeneric = document.getElementById("carousel-example-generic");
//carouselExampleGeneric.carousel();
}

How to limit the display of the content div json to three

How can I limit the display of the content div JSON to three? Now the code shows all the items downloaded from JSON. I would like to only return 3 divs.
<div id="p"></div>
$.getJSON('element.json', function(data){
var a = data.i;
var d = $("<div class='p1'>");
var ele = '';
$.each(a,function(i,v){
ele += "<div class='k'>"+ v.num + "</div>";
});
d.html(ele);
$("#p").append(a);
});
{
"i":[{
"num": "1",
},{
"num": "1",
},{
"num": "3"
},{
"num": "4"
},{
"num": "5",
}]
}
If you only want to retrieve 3 elements from the array you could use slice():
var a = data.i.slice(0, 3);
This could be limited in the if statement to ensure the index doesn't exceed 2.
$.each(a,function(i,v){
if (i>=3){
return false;
}
ele += "<div class='k'>"+ v.num + "</div>";
});

How to separate items rendered from .getJSON by category prop

I've got a menu of coffee, for example, each with it's own parentCategory and I want to render them on the page like so but I'm not entirely sure where to start:
category title
item
item
item
item
category title
item
item
My data model looks like this:
{ "menuItems": [
{
"index": 0,
"parentCategory": "Americanos",
"calories": 234,
"name": "Caffè Americano",
"photos": {
"squareThumb": "http://www.starbucks.com/assets/67c30b9dacd4406db797b1690ac22475.jpg"
}
}, {
"index": 0,
"parentCategory": "Lattes",
"calories": 234,
"name": "Caffè Latte",
"photos": {
"squareThumb": "http://www.starbucks.com/assets/aee68ca3048142f38741f20b30b7a581.jpg"
}
}, {
"index": 0,
"parentCategory": "Mochas",
"calories": 234,
"name": "Caffè Mocha",
"photos": {
"squareThumb": "http://www.starbucks.com/assets/bc15a5ca9d744b66bda07254f2f50013.jpg"
}
}...
and my current script looks like so:
$.getJSON('menu.json', function(drinks) {
var getMenuItem = drinks.menuItems;
var sortedArray = getMenuItem.sort(function(a,b){
return a.parentCategory > b.parentCategory ?1 :-1
})
var output = "";
for (var i in sortedArray) {
output += "<div class='menuItem'><p>" + drinks.menuItems[i].name + "</p><img src='" + drinks.menuItems[i].photos.squareThumb + "'/></div>";
}
document.getElementById("demo").innerHTML=output;
});
Keep the latest category in a variable. Whenever the category changes, start a new <div> for the category.
var last_cat = null;
var output = "";
for (var i in sortedArray) {
var item = sortedArray[i];
if (item.parentCategory != last_cat) {
if (last_cat) { // close the previous category
output += "</div>";
}
output += "<div class='category'><p>" + item.parentCategory + "</p>";
last_cat = item.parentCategory;
}
output += "<div class='menuItem'><p>" + item.name + "</p><img src='" + item.photos.squareThumb + "'/></div>";
}
if (last_cat) {
output += "</div>";
}

For loop in Javascript to display the books;

"Pascal" : [
{"Name": "Pascal made simple","price":"700"},
{"Name": "Guide to pascal","price":"400"},
{"Name": "Pascal for all","price":"500"}],
"Scala" : [
{"Name":"Scala for Dummies","price":"1000"},
{"Name":"Scala in Depth","Price":"1300"}]
please help me to Write a for-loop in javascript to display the books for Pascal as an HTML table.
Just loop over the books and add them as html:
function booksToTable(books) {
var html = ['<table>'];
for (var i = 0, l = books.length; i < l; i++) {
var book = books[i];
html.push('<tr><td>' + book.Name + '</td><td>' + book.price + '</td></tr>');
}
html.push('</table>');
return html.join('\n');
}
document.write(booksToTable(input.Pascal));

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