Add rows to an empty tbody element

Add rows to an empty tbody element - javascript

I have table like this:
<table id="search-table" class="table">
<thead>
<tr>
<th>Something</th>
<th>Something2</th>
<th>Something3</th>
<th>Something4</th>
<th>Something5</th>
</tr>
</thead>
<tbody></tbody>
</table>
I have an API call which returns data that I want to put as row and columns in the empty tbody element.
var body = document.getElementsbyTagName("tbody");
var x = 0;
for (i = 0; i < APIcall.length; i++) {
var createRow = body.insertRow();
for (j = 0; j < 7; j++) {
var x = createRow.insertCell(j);
}
}
If I insertRow on the thead element the rows are created, but not when I try to add it to tbody. Probably me just misunderstanding something. Any suggestions what I should do?

you're almost there.
First, as Rory mentioned, you're not targeting the tbody in DOM.
You can fix that by replacing the first line with this:
var body = document.querySelector('#search-table tbody')
What that does, is this: It looks for an element with an ID of search-table and a descendant <tbody> and returns a reference.
Your code would run without an error then, but I'm confused about the result.
In the second line, you have var x = 0 but later on I can see var x = createRow.insertCell(j); also. (The second x would give you a reference to a new <td> element).
Hope that helps.

var html ='';
for (i = 0; i < APIcall.length; i++) {`enter code hereenter code here
html += '<tr><td>' + APIcall[i].somthing + '</td><td>'+ APIcall[i].somthing + '</td>' +
'<td>' + APIcall[i].somthing + '</td>' + < td > '+APIcall[i].somthing+' </td>'+
'<td>' + APIcall[i].somthing + '</td></tr>';
}
$('#search-table > tbody').append(html);
enter code here

If you have more than one tbody in your markup, you have to target your's specifically because getElementsByTagName returns an array of elements.
for eyample:
var tbodies = document.getElementsbyTagName("tbody");
var targetTbody = tbodies[0];
or you could loop over tbodies if you want to add your stuff to multiple tbodies.

Related

How to improve replaceWith performance on IE11

I am rendering an array of data in table element, the data can be filtered so the table should be updated with the new data.
I am using JQuery replaceWith() for replacing the old tbody element with new tbody which represents the new data, but it seems to take very long time on IE11 to be rendered when the length of the array of data is 1700.
This is my code:
var markup='', table = [] // 2D array of data;
markup += '<tbody>';
for (var row = 0; row < table.length; row++) {
markup += '<tr role="row">';
for (var col = 0; col < table[0].length; col++) {
markup += '<td>' + table[row][col] + '</td>';
}
markup += '</tr>';
}
markup += '</tbody>';
.$('#data-results > tbody').replaceWith(markup);

In my understanding, adding large strings of tags using .append() or .html() is supposed to be more efficient than adding through .replaceWith().
So, try my below lines of code to achieve the same you asked.
$('#data-results > tbody').empty();
$('#data-results > tbody').html(markup);
In otherway, you can also try .innerHTML
$('#data-results > tbody').empty();
$('#data-results > tbody').innerHTML = markup;

Getting id of dynamically created row

In a table of id productTable, I am adding rows using the following jquery code:
$('#productTable').html("");
for (var i = 0; i < result.count; i++)
{
$('#productTable').append('<tr id=' + result.productArray[i].productID + 'class="product"><td><a> '+result.productArray[i].productName+'</a></td></tr>');
}
and I'm attaching a handler to these rows using:
$("#productTable").on("click","tr",function(event){
alert(this.id);
});
but the ID that I'm getting is of the table whereas I want the id of the row that is being clicked.
Help

The issue is with what you're appending, it's not valid HTML
$('#productTable').append(
'<tr id=' + result.productArray[i].productID + 'class="product">
<td>
<a> '+result.productArray[i].productName+'</a>
</td>
</tr>'
);
look very carefully, there's no quotes around the ID, and no space separating the ID and the class.
Basically you end up with
<tr id=idclass="product">
<td>
<a>text</a>
</td>
</tr>
The correct code would be
$('#productTable').append('<tr id="' + result.productArray[i].productID + '" class="product"><td><a> '+result.productArray[i].productName+'</a></td></tr>');

Try This:
$('#productTable').html("");
for (var i = 0; i < result.count; i++)
{
var obj = $('<tr id=' + result.productArray[i].productID + 'class="product"><td><a> '+result.productArray[i].productName+'</a></td></tr>');
$(obj).click(function(event){
alert($(this).attr("id"));
});
$('#productTable').append(obj);
}

Bind Event when you creating element dynamically. This is another way to do what you want.
$('#productTable').html("");
for (var i = 0; i < result.count; i++)
{
$('#productTable').append('<tr id=" + result.productArray[i].productID + " class="product"><td><a> '+result.productArray[i].productName+'</a></td></tr>');
$('#'+result.productArray[i].productID).bind('click',function(){
//put your code here
});
}
Demo

Parsing JSON objects for HTML table

I am trying to display a "leaderboard" table based on JSON data.
I have read a lot about the JSON format and overcome some initial obstacles, but my Javascript knowledge is very limited and I need help!
Basically my JSON data comes through looking like this:
[{"User_Name":"John Doe","score":"10","team":"1"},{"User_Name":"Jane Smith","score":"15","team":"2"},{"User_Name":"Chuck Berry","score":"12","team":"2"}]
What I need is to be able to loop through this array, generating a table row or list item for each object. There will be an unknown amount of total objects in the array but each will have the same format- three values: Name, Score, Team.
So far I have used the following code, which confirms that I am successfully loading the objects in the console-
$.getJSON(url,
function(data){
console.log(data);
});
but I am not sure how to iterate over them, parsing them into the HTML table.
The next step is sorting the entries by score in descending order...
Any help would be much appreciated.
Thanks!
EDIT:
Updated code below, this works:
$.getJSON(url,
function (data) {
var tr;
for (var i = 0; i < data.length; i++) {
tr = $('<tr/>');
tr.append("<td>" + data[i].User_Name + "</td>");
tr.append("<td>" + data[i].score + "</td>");
tr.append("<td>" + data[i].team + "</td>");
$('table').append(tr);
}
});
(The $.parseJSON was not necessary, we can use 'data' as the JSON array is already parsed I believe)

Loop over each object, appending a table row with the relevant data each iteration.
$(document).ready(function () {
$.getJSON(url,
function (json) {
var tr;
for (var i = 0; i < json.length; i++) {
tr = $('<tr/>');
tr.append("<td>" + json[i].User_Name + "</td>");
tr.append("<td>" + json[i].score + "</td>");
tr.append("<td>" + json[i].team + "</td>");
$('table').append(tr);
}
});
});
JSFiddle

You can use simple jQuery jPut plugin
http://plugins.jquery.com/jput/
<script>
$(document).ready(function(){
var json = [{"name": "name1","score":"30"},{"name": "name2","score":"50"}];
//while running this code the template will be appended in your div with json data
$("#tbody").jPut({
jsonData:json,
//ajax_url:"youfile.json", if you want to call from a json file
name:"tbody_template",
});
});
</script>
<div jput="tbody_template">
<tr>
<td>{{name}}</td>
<td>{{score}}</td>
</tr>
</div>
<table>
<tbody id="tbody">
</tbody>
</table>

Loop over each object, push in string array and join them. Append in target table, it is better.
$(document).ready(function () {
$.getJSON(url,
function (json) {
var tr=[];
for (var i = 0; i < json.length; i++) {
tr.push('<tr>');
tr.push("<td>" + json[i].User_Name + "</td>");
tr.push("<td>" + json[i].score + "</td>");
tr.push("<td>" + json[i].team + "</td>");
tr.push('</tr>');
}
$('table').append($(tr.join('')));
});

You can use KnockoutJS with jQuery. KnockoutJS have smart data-binding features. By using the foreach binding feature you can write your code like this example:
HTML:
<table>
<thead>
<tr>
<th>User Name</th>
<th>Score</th>
<th>Team</th>
</tr>
</thead>
<tbody data-bind="foreach: teams">
<tr>
<td data-bind="text: User_Name"></td>
<td data-bind="text: score "></td>
<td data-bind="text: team "></td>
</tr>
</tbody>
</table>
JavaScript:
$(document).ready(function () {
$.getJSON(url,function (json) {
ko.applyBindings({
teams: json
});
}
});
});
Fiddle Demo with your dummy data

Make a HTML Table from a JSON array of Objects by extending $ as shown below
$.makeTable = function (mydata) {
var table = $('<table border=1>');
var tblHeader = "<tr>";
for (var k in mydata[0]) tblHeader += "<th>" + k + "</th>";
tblHeader += "</tr>";
$(tblHeader).appendTo(table);
$.each(mydata, function (index, value) {
var TableRow = "<tr>";
$.each(value, function (key, val) {
TableRow += "<td>" + val + "</td>";
});
TableRow += "</tr>";
$(table).append(TableRow);
});
return ($(table));
};
and use as follows:
var mydata = eval(jdata);
var table = $.makeTable(mydata);
$(table).appendTo("#TableCont");
where TableCont is some div

This one is ugly, but just want to throw there some other options to the mix. This one has no loops. I use it for debugging purposes
var myObject = {a:1,b:2,c:3,d:{a:1,b:2,c:3,e:{a:1}}}
var myStrObj = JSON.stringify(myObject)
var myHtmlTableObj = myStrObj.replace(/{/g,"<table><tr><td>").replace(/:/g,"</td><td>","g").replace(/,/g,"</td></tr><tr><td>","g").replace(/}/g,"</table>")
$('#myDiv').html(myHtmlTableObj)
Example:
var myObject = {a:1,b:2,c:3,d:{a:1,b:2,c:3,e:{a:1}}}
var myStrObj = JSON.stringify(myObject)
var myHtmlTableObj = myStrObj.replace(/\"/g,"").replace(/{/g,"<table><tr><td>").replace(/:/g,"</td><td>","g").replace(/,/g,"</td></tr><tr><td>","g").replace(/}/g,"</table>")
$('#myDiv').html(myHtmlTableObj)
#myDiv table td{background:whitesmoke;border:1px solid lightgray}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div id='myDiv'>table goes here</div>

another nice recursive way to generate HTML from a nested JSON object (currently not supporting arrays):
// generate HTML code for an object
var make_table = function(json, css_class='tbl_calss', tabs=1){
// helper to tabulate the HTML tags. will return '\t\t\t' for num_of_tabs=3
var tab = function(num_of_tabs){
var s = '';
for (var i=0; i<num_of_tabs; i++){
s += '\t';
}
//console.log('tabbing done. tabs=' + tabs)
return s;
}
// recursive function that returns a fixed block of <td>......</td>.
var generate_td = function(json){
if (!(typeof(json) == 'object')){
// for primitive data - direct wrap in <td>...</td>
return tab(tabs) + '<td>'+json+'</td>\n';
}else{
// recursive call for objects to open a new sub-table inside the <td>...</td>
// (object[key] may be also an object)
var s = tab(++tabs)+'<td>\n';
s += tab(++tabs)+'<table class="'+css_class+'">\n';
for (var k in json){
s += tab(++tabs)+'<tr>\n';
s += tab(++tabs)+'<td>' + k + '</td>\n';
s += generate_td(json[k]);
s += tab(--tabs)+'</tr>' + tab(--tabs) + '\n';
}
// close the <td>...</td> external block
s += tab(tabs--)+'</table>\n';
s += tab(tabs--)+'</td>\n';
return s;
}
}
// construct the complete HTML code
var html_code = '' ;
html_code += tab(++tabs)+'<table class="'+css_class+'">\n';
html_code += tab(++tabs)+'<tr>\n';
html_code += generate_td(json);
html_code += tab(tabs--)+'</tr>\n';
html_code += tab(tabs--)+'</table>\n';
return html_code;
}

Here are two ways to do the same thing, with or without jQuery:
// jquery way
$(document).ready(function () {
var json = [{"User_Name":"John Doe","score":"10","team":"1"},{"User_Name":"Jane Smith","score":"15","team":"2"},{"User_Name":"Chuck Berry","score":"12","team":"2"}];
var tr;
for (var i = 0; i < json.length; i++) {
tr = $('<tr/>');
tr.append("<td>" + json[i].User_Name + "</td>");
tr.append("<td>" + json[i].score + "</td>");
tr.append("<td>" + json[i].team + "</td>");
$('table').first().append(tr);
}
});
// without jquery
function ready(){
var json = [{"User_Name":"John Doe","score":"10","team":"1"},{"User_Name":"Jane Smith","score":"15","team":"2"},{"User_Name":"Chuck Berry","score":"12","team":"2"}];
const table = document.getElementsByTagName('table')[1];
json.forEach((obj) => {
const row = table.insertRow(-1)
row.innerHTML = `
<td>${obj.User_Name}</td>
<td>${obj.score}</td>
<td>${obj.team}</td>
`;
});
};
if (document.attachEvent ? document.readyState === "complete" : document.readyState !== "loading"){
ready();
} else {
document.addEventListener('DOMContentLoaded', ready);
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr>
<th>User_Name</th>
<th>score</th>
<th>team</th>
</tr>
</table>'
<table>
<tr>
<th>User_Name</th>
<th>score</th>
<th>team</th>
</tr>
</table>

I spent a lot of time developing various reports. So, now I have an idea - create a web framework for building web reports. I have started here:
https://github.com/ColdSIce/ReportUI
Now it is an angular 4 module. You can pass your json data to TableLayoutComponent and get a HTML table as result. Table already has fixed header. Also you can fix some your columns by default or by click. More there, you can customize table properties like background-color, font-color, row-height etc.
If you are interested you can join me in this project and help.

Here is an another way to parse json object into Html table
//EXTRACT VALUE FOR HTML HEADER.
// ('Book ID', 'Book Name', 'Category' and 'Price')
var col = [];
for (var i = 0; i < d.length; i++) {
for (var key in d[i]) {
if (col.indexOf(key) === -1) {
col.push(key);
}
}
}
// CREATE DYNAMIC TABLE.
var table = document.createElement("table");
// CREATE HTML TABLE HEADER ROW USING THE EXTRACTED HEADERS ABOVE.
var tr = table.insertRow(-1); // TABLE ROW.
for (var i = 0; i < col.length; i++) {
var th = document.createElement("th");// TABLE HEADER.
th.innerHTML = col[i];
tr.appendChild(th);
}
// ADD JSON DATA TO THE TABLE AS ROWS.
for (var i = 0; i < d.length; i++) {
tr = table.insertRow(-1);
for (var j = 0; j < col.length; j++) {
var tabCell = tr.insertCell(-1);
tabCell.innerHTML = d[i][col[j]];
}
}
// FINALLY ADD THE NEWLY CREATED TABLE WITH JSON DATA TO A CONTAINER.
var divContainer = document.getElementById("showData");
divContainer.innerHTML = "";
divContainer.appendChild(table);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>

This code will help a lot
function isObject(data){
var tb = document.createElement("table");
if(data !=null) {
var keyOfobj = Object.keys(data);
var ValOfObj = Object.values(data);
for (var i = 0; i < keyOfobj.length; i++) {
var tr = document.createElement('tr');
var td = document.createElement('td');
var key = document.createTextNode(keyOfobj[i]);
td.appendChild(key);
tr.appendChild(td);
tb.appendChild(tr);
if(typeof(ValOfObj[i]) == "object") {
if(ValOfObj[i] !=null) {
tr.setAttribute("style","font-weight: bold");
isObject(ValOfObj[i]);
} else {
var td = document.createElement('td');
var value = document.createTextNode(ValOfObj[i]);
td.appendChild(value);
tr.appendChild(td);
tb.appendChild(tr);
}
} else {
var td = document.createElement('td');
var value = document.createTextNode(ValOfObj[i]);
td.appendChild(value);
tr.appendChild(td);
tb.appendChild(tr);
}
}
}
}

For those interested in a general solution in plain Vanilla JS. It works independently of the number of columns you have in your json.
const myData = [{"User_Name":"John Doe","score":"10","team":"1"},{"User_Name":"Jane Smith","score":"15","team":"2"},{"User_Name":"Chuck Berry","score":"12","team":"2"}]
const createTable = (json) => {
let table = document.getElementById('js-table')
for (let row of json) {
let newRow = table.insertRow();
for (let cell of Object.values(row)) {
let newCell = newRow.insertCell();
let newText = document.createTextNode(cell);
newCell.appendChild(newText);
}
}
}
createTable(myData)
<table>
<tbody id="js-table">
</tbody>
</table>

This post is very much helpful to all of you
First Parse the json data by using jquery eval parser and then iterarate through jquery each function below is the code sniplet:
var obj = eval("(" + data.d + ")");
alert(obj);
$.each(obj, function (index,Object) {
var Id = Object.Id;
var AptYear = Object.AptYear;
$("#ddlyear").append('<option value=' + Id + '>' + AptYear + '</option>').toString();
});

Changing the content of all <pre> tags using JavaScript

I want to know how I change all the pre tags inside a document...
I'm using this:
var preContent = document.getElementById('code').innerHTML;
but this only changes the content of 1 pre tag... the one with the ID 'code'.
If you can show me how i can change all the pre tags using JavaScript I appreciate
Here's all the code:
window.onload = function () {
var preContent = document.getElementById('code').innerHTML;
var codeLine = new Array();
var newContent = '<table width="100%" border="1" '
+ 'cellpadding="0" cellspacing="0" >';
codeLine = preContent.split('\n');
for (var i = 0; i < codeLine.length; i++) {
newContent = newContent + '<tr><td class="codeTab1" >'
+ i.toString() + '</td><td class="codeTab2">'
+ codeLine[i] + '</td></tr>';
}
newContent = newContent + '</table>';
document.getElementById('code').innerHTML = newContent;
}
PS: This is to make a look like a normal compiler with numbers before the line
PPS: Each pre tag will have a different content and I want the same script to change it (if possible).

You can use getElementsByTagName:
var preElements = document.getElementsByTagName('pre');
for(var i = 0; i < preElements.length; ++ i)
{
var element = preElements[i];
/* modify element.innerHTML here */
}

First problem in you code . No two elements in a document can have same id .
So you can change it easily with jquery . look at the code .
$('pre').html("what ever text you want to show ");
Or with javascript you can do like this :
var x = document.getElementsByTagName('pre');
for(var i = 0; i < x.length; ++ i)
{
x.innerHTML = "what ever text you want to show";
}

jQuery add <thead> and add <tbody>

How do I add <thead> and <tbody> this using jQuery?
the problem is my table has 1 or 2 th rows?
$('#myTable tr:has(th)').wrap('<thead></thead>');
<table id="myTable">
<tr><th>1</th><th>2</th><th>3</th><th>4</th></tr>
<tr><th>1</th><th>2</th><th>3</th><th>4</th></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
</table>

What you need to do is remove the rows and append them to a thead element
var myTable = jQuery("#myTable");
var thead = myTable.find("thead");
var thRows = myTable.find("tr:has(th)");
if (thead.length===0){ //if there is no thead element, add one.
thead = jQuery("<thead></thead>").appendTo(myTable);
}
var copy = thRows.clone(true).appendTo("thead");
thRows.remove();
jsFiddle exmaple

use wrapAll instead of wrap
$('#myTable tr:has(th)').wrapAll('<thead></thead>');
$("#myTable thead").prependTo("#myTable")

function createTable(data) {
var str = "";
str += '<table><thead>';
str += '<tr><td>Pos</td><td>Ref</td></tr></thead><tbody>';
for (var item in data.recentList) {
str += '<tr>';
for (idata in data.recentList[item]) {
str += '<td>' + data.recentList[item][idata] + '</td>';
}
str += '</tr>';
}
str += '</tbody></table>';
$('body').append(str);
}
Working version that creates a table from an array

We Keep Coding

JavaScript is the programming language of the Web.

Add rows to an empty tbody element - javascript

Related

How to improve replaceWith performance on IE11

Getting id of dynamically created row

Parsing JSON objects for HTML table

Changing the content of all <pre> tags using JavaScript

jQuery add <thead> and add <tbody>

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