Loop of html using javascript - javascript

i am new on using of JavaScript on looping of html. I have this code below that i am working at. In this problem of mine i have 2 loop the main and the card-body loop. As you can see in the code First I need to loop the main to create a card and then at the body i need also to loop it because of the data content. I have also working code below but as you can see at the card-body its not looping anymore but static data that I inputted.
Problem
for (var i = 0; i < dataLength; i++) {
var docsLength = data.data[i].resultData;
var title = data.data[i].resultData[i].Type.Description;
var card = '<div class="card"> <div class="card-header bg-success"><h3 class="card-title">' + title + ' </h3 ></div> <div class="card-body">'; for (var a = 0; a < 2; a++) { "a" } ' </div>' +
'</div >';
$("#card_documents > .card-body").append(card);
}
Working
for (var i = 0; i < dataLength; i++) {
var docsLength = data.data[i].resultData;
var title = data.data[i].resultData[i].Type.Description;
var card = '<div class="card"> <div class="card-header bg-success"><h3 class="card-title">' + title + ' </h3 ></div> <div class="card-body">' +
"asdasdasdasd" +
'</div > ' +
'</div >';
$("#card_documents > .card-body").append(card);
}
Is my syntax wrong?. Please help. Thanks

You can replace for (var a = 0; a < 2; a++) { "a" } with "a".repeat(2).
More info about repeat() here

Yes, your syntax is wrong. Specifically the way you're trying to use the for loop.
I would suggest building up the string in a variable.
Here is a stripped down version of how you might achieve that.
var card = '<div class="card">';
for (var a = 0; a < 2; a++) {
card += "a";
}
card += '</div>';
$("#card_documents > .card-body").append(card);

Related

When using html() or text() closing html tags do not show

I am trying to receive messages, and when I do, it works for the most part except for the fact that the html closing tags do not return (</div>,</p>, etc). I use jquery's html(), and I have used text() to verify that the closing tags don't return. Here is my code:
function formatMessages(data) {
var dataArray = data.split("\n");
var messages = "";
for (var i = 0; i < dataArray.length; i++) {
dataArray[i] = dataArray[i].split(":");
}
for (var i = 0; i < dataArray.length; i++) {
messages += '<div class="chatMessage"><h3 class="chatName">'+dataArray[i][0]+":</h3> ";
messages += '<h4 class="chatContent">'+dataArray[i][1]+'</h4>';
var timeDate = moment(dataArray[i][2]*1000).format("M/D/YY");
var timeMinute = moment(dataArray[i][2]*1000).format("m");
var timeHour = moment(dataArray[i][2]*1000).format("H");
if(timeHour>12) {
timeHour -=12;
var ampm = "pm"
}
else {
ampm = "am"
}
messages += '<h6 class="chatTime">'+ timeHour + ':' + timeMinute +'<span class="chatAmpm">' + ampm +'</span> (' + timeDate + ')</h6></div>';
}
return messages;
}
And I implement it with:
$('#messages').html(formatMessages(data));
The 'messages' tag:
<div id="messages"></div>
Example of data:
Kyle Donoghue:g:1490379471
Kyle Donoghue:hell:1490379481
Kyle Donoghue:llklkl:1490380511
Kyle Donoghue:ljnlkn:1490380512
And the output:
<div class="chatMessage"><h3 class="chatName">Kyle Donoghue: <h4 class="chatContent">g<h6 class="chatTime">11:17<span class="chatAmpm">am (3/24/17)<div class="chatMessage"><h3 class="chatName">Kyle Donoghue: <h4 class="chatContent">hell<h6 class="chatTime">11:18<span class="chatAmpm">am (3/24/17)<div class="chatMessage"><h3 class="chatName">Kyle Donoghue: <h4 class="chatContent">llklkl<h6 class="chatTime">11:35<span class="chatAmpm">am (3/24/17)<div class="chatMessage"><h3 class="chatName">Kyle Donoghue: <h4 class="chatContent">ljnlkn<h6 class="chatTime">11:35<span class="chatAmpm">am (3/24/17)

Modifying <img src style="visibility"> through JavaScript

I'm building a memory game in HTML & JS where you guess 2 different images and try to pick 2 same ones.
I'm stuck with putting an onclick function to a hidden image.
Here is my code so ill try to explain better...
var table = '';
for(var i = 0; i < 4; i++){
table += '<tr>';
for(var j = 0; j < 3; j++){
table += '<td align="center"><img src="./pics/image_part_00' + Math.floor((Math.random() * 6) + 1) + '.jpg";" width="100px"" onclick="clicked(this);" style="visibility: hidden;"></td>';
}
table += '</tr>';
}
document.getElementById('theGame').innerHTML = '<table border=1 cellpadding="10" class="tabela1">' + table + '</table>'
Now what im trying to do is to overwrite that visibility: hidden; so the image is visible when clicked....
And here is the function
function clicked(element){
element.style.visibility = "visible";
}
but it doesn't work because with that element.style.visibility im changing the visibility of a table cell.
Anyone got a solution? I'm probably missing something and can't figure it...
NOTE: It's a school assignment so it has to be in a table.
Here is a some fixed javascript. when you catch onclick event, it won't work on hidden elements. So I move event listener onto td:
var table = '';
for(var i = 0; i < 4; i++){
table += '<tr>';
for(var j = 0; j < 3; j++){
table += '<td align="center" onclick="click_it(this)">
<img src="./pics/image_part_00' + Math.floor((Math.random() * 6) + 1) + '.jpg"
width="100px" style="visibility: hidden"></td>';
}
table += '</tr>';
}
document.getElementById('theGame').innerHTML = '<table border=1 cellpadding="10" class="tabela1">' + table + '</table>';
function click_it(cell){
var image = cell.children[0];
image.style.visibility = 'visible';
}
You can search for the img child of the table cell
var child = element.childNodes;
The var child will return an array of elements, then you just need to access to the position that the is, and change the visibility attribute:
child[1].style.visibility = "visible";
You can try below,
just played a trick to match element id dynamically
to make it visible.
Added on click to td instead of image.
added id to image.
here is the code
<div id="theGame">
var table = '';
for (var i = 0; i < 4; i++) {
table += '<tr>';
for (var j = 0; j < 3; j++) {
table += '<td align="center" onclick="clicked(' + j + ')"> <img id=img_' + j + ' src="./pics/image_part_00' + Math.floor((Math.random() * 6) + 1) + '.jpg;" width="100px" style="visibility: hidden;"> </td>';
}
table += '</tr>';
}
document.getElementById('theGame').innerHTML = '<table border=1 cellpadding="10" class="tabela1">' + table + '</table>'
function clicked(element) {
document.getElementById('img_' + element).style.visibility = "visible";
}

div's innerhtml content replacing the content of a div

I have a div that its content is pulled from innerhtml as shown
var users = '';
for (var i = 0; i < json.length; i++) {
users += '<strong>' + json[i].name + '</strong><br/>';
}
users_container.innerHTML = users;
}
this is the div that the innerhtml replaces its content. The content of the div only displays for some seconds and disappears.
<div id="users-container" class="inner-container">
<h3>Active users</h3>
</div>
Please how can I retain the content of the div as a header while the innerhtml contents is displayed as well. Kindly assist!
html
<div id="users-container" class="inner-container">
<h3>Active users</h3>
<div id="usersList"></div>
</div>
script
var users = '';
for (var i = 0; i < json.length; i++) {
users += '<strong>' + json[i].name + '</strong><br/>';
}
usersList.innerHTML = users;
}
You can use a specific div for the users content and keep the original content of your div.
JavaScript:
var users_div = document.getElementById("users_div");
var users = '';
for (var i = 0; i < json.length; i++) {
users += '<strong>' + json[i].name + '</strong><br/>';
}
users_div.innerHTML = users;
}
HTML:
<div id="users-container" class="inner-container">
<h3>Active users</h3>
<div id="users_div">
</div>
</div>

Double for loop multidimensional array javascript

Im using ajax to return some json. Here is what the json looks like.
[{"optionValue":"11","optionDisplay":"Canon","preitem":`[{"preitemId":"15","preitemLabel":"Canon EF 100mm f\/2.8L Macro IS USM "},{"preitemId":"18","preitemLabel":"12412"},{"preitemId":"21","preitemLabel":"Sonydas1df Test"}]},{"optionValue":"20","optionDisplay":"Nikon","preitem":""},{"optionValue":"21","optionDisplay":"Audio & Aerial","preitem":""},{"optionValue":"23","optionDisplay":"Sony","preitem":[{"preitemId":"19","preitemLabel":"Sony 1412Test"},{"preitemId":"20","preitemLabel":"Son124124y Test"}]}]`
From what you can see here each option has a few preitems.
For example Canon has the preitems Canon EF 100mm, 12412 and Sonydas1df Test.
The goal is to output everything onto a html page.
So canon will have its own heading with its pre items under it.
Here is my code.
for (var i = 0; i < j.length; i++) {
for (var u = 0; u < j[i].preitem.length; u++) {
preitems += j[i].preitem[u].preitemLabel+'<br>';
}
options += '<div class="itemBlock"><b>'+ j[i].optionDisplay +'</b><input class="subcheckboxes" type="checkbox" id="checkit" value="' + j[i].optionValue + '">' + j[i].optionDisplay + '</input><div class="" id="subcat' + j[i].optionValue + '">'+preitems+'</div></div>';
}
$("#subcat").html(options);
The main options (canon,etc) get displayed fine. However it does not output the only the pritems which are in the option. It outputs every single preitem in the whole json returned.
I want to only show the preitems which are in the option.
Thanks
You aren't resetting preitems
You probably want...
for (var i = 0; i < j.length; i++) {
preitems = '';
for (var u = 0; u < j[i].preitem.length; u++) {
...
When traversing multi-dimensional data objects, you need more specifically identify which actions happen how many times and where. Your plan of just scooping up all of the pre-items and dumping them for each item is fine if you reset the pre-items as rjdown suggests. I'd try something like this instead though:
for (var i = 0, lenj = j.length; i < lenj; i++) {
options += '<div class="itemBlock"><b>'+ j[i].optionDisplay +'</b><input class="subcheckboxes" type="checkbox" id="checkit" value="' + j[i].optionValue + '">' + j[i].optionDisplay + '</input><div class="" id="subcat' + j[i].optionValue + '">';
for (var u = 0, lenu = j[i].preitem.length; u < lenu; u++) {
options += j[i].preitem[u].preitemLabel+'<br>';
}
options += '</div></div>';
}
$("#subcat").html(options);
I feel like this is much more readable and fixes your problem.

Creating a loop that populates a select tag

function buildOrder(data) {
var $fragment;
$fragment = $('<div/>');
for (var i = 0; i < data.length; i++) {
$fragment.append('<div class="row-container"><div class="row cupcake-row">' + data[i].name + '</div><div class="clear"></div></div>');
}
$('#review-section').append($fragment);
}
I essentially want to add a tag with 50 options being dynamically created using a for loop. But I'm not sure what the syntax would be to add it to the <div class="row-container"/> I know in php I would just throw the loop in the middle and echo the options, however that doesnt work in javascript.
EDIT:
It would look like this:
$fragment.append('<div class="row-container"><div class="row cupcake-row">' + data[i].name + '</div><select><option value="1">1</option> etc...</select><div class="clear"></div></div>');
You could pass a function to .append and do your loop there:
$("<div>").append(function() {
var $select = $("<select>");
for(var i = 1; i <= 50; i++) {
$("<option>").text(i).val(i).appendTo($select);
}
return $select;
});
// returns a jQuery object with one div element (with children):
// <div>
// <select>
// <option value="1">1</option>
// ...
// </select>
// </div>
Mixed into your code it would be along the lines of:
var $fragment = $("<div>");
for (var i = 0; i < data.length; i++) {
var $container = $("<div>").addClass("row-container")
.appendTo($fragment);
$("<div>").addClass("row cupcake-row")
.text(data[i].name)
.appendTo($container);
$("<div>").append(function() {
var $select = $("<select>");
for(var i = 1; i <= 50; i++) {
$("<option>").text(i).val(i).appendTo($select);
}
return $select;
}).appendTo($container);
$("<div>").addClass("clear")
.appendTo($container);
}
$("#review-section").append($fragment);
Try something like this
function buildOrder(data) {
var $fragment = $('<div></div>');
var options = [];
for (var i = 0; i < data.length; i++) {
options.push('<div class="row-container"><div class="row cupcake-row">' + data[i].name + '</div><div class="clear"></div></div>');
}
$fragment.html(options.join("\n"));
$('#review-section').append($fragment);
}
According to your posted code:
function buildOrder(data) {
var $fragment;
$fragment = '<div><div class="row-container">';
for (var i = 0; i < data.length; i++) {
$fragment += '<div class="row cupcake-row">' + data[i].name + '</div><div class="clear"></div>';
}
$fragment += '</div></div>';
$('#review-section').append($fragment);
}
But in your posted code doesn't match with your post title, where you mentioned about select tag and in your code you're trying with div.
If you want to create a select, then something like:
function buildOrder(data) {
var $fragment;
$fragment = '<div class="row-container"><select>'; // taking select within your div
for (var i = 0; i < data.length; i++) {
// adding options to select
$fragment += '<option value="'+ data[i].name +'">' + data[i].name + '</option>';
}
$fragment += '</select></div>'; // end select and div
$('#review-section').append($fragment);
}

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