I am appending a row on a given "id" after entering the input field but it's not appending.
function myfunction() {
var obj = "<tr><td>" + document.getElementById("name").value + "</td><td>" + document.getElementById("num").value + "</td><td>" + document.getElementById("address").value + "</td></tr>";
document.getElementById("table").innerHTML = obj;
}
<table>
<tr>
<td>Name: <input type="text" id="name"></td>
<td>Age:<input type="number" id="num"></td>
<td>Address:<input type="text" id="address"></td>
<td><input type="button" onclick="myfunction()" value="click on me"></td>
</tr>
<tbody id="table">
</tbody>
</table>
EDIT : you have several typo:
You write "innnnerHtml" (3n) instead of "innerHtml"
By writing innerHtml = obj you replace all html inside the selected div (the table in your case) you must use "+="
You use innerHtmlproperty instead of appendfunction.
function myfunction(){
var obj = "<tr><td>" + document.getElementById("name").value + "</td><td>" + document.getElementById("num").value + "</td><td>" + document.getElementById("address").value + "</td></tr>";
document.getElementById("table").innerHTML += obj;
}
// an other way to do it
function myfunction2() {
var line = document.createElement("tr");
var td1 = document.createElement("td");
td1.append(document.getElementById("name").value);
var td2 = document.createElement("td");
td2.append(document.getElementById("num").value);
var td3 = document.createElement("td");
td3.append(document.getElementById("address").value);
line.append(td1);
line.append(td2);
line.append(td3);
document.getElementById("table").append(line)
}
<table>
<tr>
<td>Name: <input type="text" id="name"></td>
<td>Age:<input type="number" id="num"></td>
<td>Address:<input type="text" id="address"></td>
<td><input type="button" onclick="myfunction()" value="click on me"></td>
<td><input type="button" onclick="myfunction2()" value="other way"></td>
</tr>
<tbody id="table">
</tbody>
</table>
It's better to call appendChild instead of innerHTML.
Using appendChild adds a new DOM element to the end of the parent node, while innerHTML takes the existing DOM content of the parent node, work with it as string, and overwrite the existing elements of the parent node with DOM generated elements from that string.
But, in Javascript we have a couple of functions like insertRow that helps you even more. See the example:
function myfunction() {
var name = document.getElementById("name").value,
num = document.getElementById("num").value,
address = document.getElementById("address").value;
var tbody = document.getElementById("table");
addRow(tbody, name, num, address);
}
function addRow(tbody, name, num, address){
var row = tbody.insertRow();
addCell(row, name, 0);
addCell(row, num, 1);
addCell(row, address, 2);
}
function addCell(row, cellText, index){
var cell = row.insertCell(index);
cell.appendChild(document.createTextNode(cellText));
}
<table>
<tr>
<td>Name: <input type="text" id="name"></td>
<td>Age:<input type="number" id="num"></td>
<td>Address:<input type="text" id="address"></td>
<td><input type="button" onclick="myfunction()" value="click on me"></td>
</tr>
<tbody id="table">
</tbody>
</table>
try this code
html code
<table id="table">
<tr>
<td>Name: <input type="text" id="name"></td>
<td>Age:<input type="number" id="num"></td>
<td>Address:<input type="text" id="address"></td>
<td><input type="button" onclick="myfunction()" value="click on me"></td>
</tr>
<tbody >
</tbody>
</table>
javascript function
function myfunction() {
var obj = "<tr><td>Name:" + document.getElementById("name").value + "</td><td>Age: " + document.getElementById("num").value + "</td><td>Address:" + document.getElementById("address").value + "</td></tr>";
$('#table tbody').append(obj);
// document.getElementById("table").innnerHTML = obj;
}
Try this code . It will helps you.
function myfunction() {
var obj = "<tr><td>" + document.getElementById("name").value + "</td><td>" +
document.getElementById("num").value + "</td><td>" +
document.getElementById("address").value + "</td></tr>";
table.innerHTML = obj;
}
Use this and watch out for the following:
Your table structure.
Typo in innerHTML
Your script was meant to overwrite not append.
function myfunction() {
var obj = "<tr><td>" + document.getElementById("name").value + "</td><td>" + document.getElementById("num").value + "</td><td>" + document.getElementById("address").value + "</td></tr>";
document.getElementById("table").innerHTML += obj;
console.log(obj);
}
<table>
<tbody id="table">
<tr>
<td>Name: <input type="text" id="name"></td>
<td>Age:<input type="number" id="num"></td>
<td>Address:<input type="text" id="address"></td>
<td><input type="button" onclick="myfunction()" value="click on me"></td>
</tr>
</tbody>
</table>
Related
In my Vue CLI component, I'm populating a row table dynamically
i.e. inside my methods:
add_row() {
var new_name = document.getElementById("new_name").value;
var new_country = document.getElementById("new_country").value;
var new_age = document.getElementById("new_age").value;
var table = document.getElementById("data_table");
var table_len = table.rows.length - 1;
table.insertRow(table_len).outerHTML =
"<tr id='row" +
table_len +
"'><td id='name_row" +
table_len +
"'>" +
new_name +
"</td><td id='country_row" +
table_len +
"'>" +
new_country +
"</td><td id='age_row" +
table_len +
"'>" +
new_age +
"</td><td><input type='button' value='Delete' class='delete' #click=\"delete_row(" +
table_len +
')"></td></tr>';
document.getElementById("new_name").value = "";
document.getElementById("new_country").value = "";
document.getElementById("new_age").value = "";
}
This is the HTML part of the component:
<table
align="center"
cellspacing="2"
cellpadding="5"
id="data_table"
border="1"
>
<tr>
<th>Name</th>
<th>Country</th>
<th>Age</th>
</tr>
<tr id="row1">
<td id="name_row1">Ankit</td>
<td id="country_row1">India</td>
<td id="age_row1">20</td>
<td>
<input
type="button"
value="Delete"
class="delete"
#click="delete_row('1')"
/>
</td>
</tr>
<tr>
<td><input type="text" id="new_name" /></td>
<td><input type="text" id="new_country" /></td>
<td><input type="text" id="new_age" /></td>
<td>
<input
type="button"
class="add"
#click="add_row()"
value="Add Row"
/>
</td>
</tr>
</table>
Notice in my add_row function, when populating the row, I append a delete button tag and in it, pass the method delete_row. Clicking on this delete button should fire the method as shown below:
in my methods:
delete_row(no) {
document.getElementById("row" + no + "").outerHTML = "";
},
But the method is not being triggered from the delete_row function. I've confirmed that the rows are working well since my button for adding that row the add_row function fires. So my thinking is since I call the delete_row function from a dynamically created, there's perhaps something extra that I need to pass to my code to trigger this method?
I am fairly new to javascript so any assistance is appreciated. I am trying to collect 2 related inputs from a user and display the array object as a table. When the inputs are submitted however, the array is displaying as undefined. I am not sure where I am going wrong. Any suggestions?
I have tried different methods of collecting the inputs off the form but none seem to work.
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Example:</title>
<script type="text/javascript">
var flights = [];
function add(ele) {
flights.push(number, miles);
render();
document.getElementById("number").value = "";
document.getElementById("miles").value = "";
}
function render() {
document.getElementById("mydiv").innerHTML = "";
thelisthtml = "";
for(i = 0; i< flights.length; i++)
thelisthtml += "<div class='card' id="+ i +"><div class='card-body'>";
thelisthtml += "Flight " + (i+1) + " : " + flights[i] + " " + "<button type='submit' onclick = 'clearToDo(this)' id="+ i +">Remove From List</button>";
document.getElementById("mydiv").innerHTML = thelisthtml;
}
function calculateStatus(){
var totalMiles = Number(document.getElementById("totalMiles").value);
if (miles < 9999){
tr = document.getElementById("table").rows[1];
tr.style.backgroundColor = "yellow";
}
if (miles >= 10000 && miles <= 24999){
tr = document.getElementById("table").rows[2];
tr.style.backgroundColor = "yellow";
}
if (miles >= 25000){
tr = document.getElementById("table").rows[3];
tr.style.backgroundColor = "yellow";
}
}
function refreshPage() {
window.location.reload();
}
</script>
</head>
<body>
<br>
<table id="table" border ="1">
<tr>
<th>Medallion Status</th>
<th>Level</th>
</tr>
<tr>
<td>Bronze</td>
<td> < 10000 miles</td>
</tr>
<tr>
<td>Silver</td>
<td> < 25000 miles</td>
</tr>
<tr>
<td>Gold</td>
<td> > 25000</td>
</tr>
</table>
<h1><strong>Traveler Information </strong></h1><br> <br>
Flight Number: <input type="text" id="number" name="number" value="" />
<br> <br>
Miles Flown: <input type="text" id="miles" name="miles" value=""/> <br>
<br>
<input type="submit" value="Add Flight" id="go" onclick="add(this)"/>
<p>----------------------------</p>
<table>
<thead>
<tr>
<th>Flight</th>
<th>Miles</th>
</tr>
<thead>
<tbody>
<tr class="col-md-6" id="mydiv"></tr>
</tbody>
</table>
<input type="reset" id="reset" name="Reset" value="Reset"
onclick="refreshPage()" /> <br> <br> <br>
<br> <br>
</body>
</html>
the expected result is the array will display in a table as the user enters information. the actual result is the array is undefined.
There are several issues but the answer to your question about how to fix the flights array containing undefined is to change
function add(ele) {
flights.push(number, miles);
render();
document.getElementById("number").value = "";
document.getElementById("miles").value = "";
}
to
function add() {
const numberElem = document.getElementById("number");
const milesElem = document.getElementById("miles");
flights.push(numberElem.value, milesElem.value);
render();
numberElem.value = "";
milesElem.value = "";
}
In your original add function you are pushing number and miles onto the flights array but number and miles are undefined variables so you are pushing undefined and undefined onto the flights array.
To also fix the other issues I'd suggest replacing your add and render functions with the follow
function add() {
const numberElem = document.getElementById("number");
const milesElem = document.getElementById("miles");
flights.push({
number: numberElem.value,
miles: milesElem.value});
render();
numberElem.value = "";
milesElem.value = "";
}
function render() {
const tbody = document.querySelector('#outputTable tbody');
tbody.innerHTML = flights.map((flight, i) => {
return ''
+ '<tr>'
+ '<td>'
+ flight.number
+ '</td>'
+ '<td>'
+ flight.miles
+ '</td>'
+ '<td>'
+ `<button type='button' onclick="clearToDo(${i})">`
+ 'Remove From List'
+ '</button>'
+ '</td>'
+ '</tr>';
}).join('');
}
and changing your second <table> to <table id="outputTable">.
I have an HTML table that adds a new row below where the button in current row is located. Currently when the row is created it generates a clone of the row above including the data. I would like this to be a row that has no entry for the input values rather than a clone of the values above.
Javascript
function addRow(row)
{
var i = row.parentNode.parentNode.rowIndex;
var tr = document.getElementById('Table').insertRow(i+1);
tr.innerHTML = row.parentNode.parentNode.innerHTML;
tr.children[0].innerHTML = tr.parentNode.querySelectorALL("tr").length-1;
}
<table id="Table" border="1">
<tr>
<td><b>Measured Depth</b></td>
<td><b>Inclination</b></td>
<td><b>Azimuth</b></td>
<td><b>Delete?</b></td>
<td><b>Add Row?</b></td>
</tr>
<tr>
<td><input size=25 type="text" id="Measured Depth0[]" contenteditable="true" value='339'></td>
<td><input size=25 type="text" id="Inclination0[]" contenteditable='true' value='0.540000021'></td>
<td><input size=25 type="text" id="Azimuth0[]" contenteditable='true' value='310.7200012'></td>
<td><input type="button" id="delbutton0" value="Delete" onclick="deleteRow(this)"/></td>
<td><input type="button" id="addmorebutton0" value="Add Row Below" onclick="addRow(this)"/></td>
</tr>
</table>
after you add a row, you can just set the values of all inputs in that row to "". get all the inputs of type text using tr.querySelectorAll("input[type='text']") and using a loop set values of all to ""
function addRow(row)
{
var i = row.parentNode.parentNode.rowIndex;
var tr = document.getElementById('Table').insertRow(i+1);
tr.innerHTML = row.parentNode.parentNode.innerHTML;
var inputs = tr.querySelectorAll("input[type='text']");
for(var i=0; i<inputs.length; i++)
inputs[i].value = "";
}
<table id="Table" border="1">
<tr>
<td><b>Measured Depth</b></td>
<td><b>Inclination</b></td>
<td><b>Azimuth</b></td>
<td><b>Delete?</b></td>
<td><b>Add Row?</b></td>
</tr>
<tr>
<td><input size=25 type="text" id="Measured Depth0[]" contenteditable="true" value='339'></td>
<td><input size=25 type="text" id="Inclination0[]" contenteditable='true' value='0.540000021'></td>
<td><input size=25 type="text" id="Azimuth0[]" contenteditable='true' value='310.7200012'></td>
<td><input type="button" id="delbutton0" value="Delete" onclick="deleteRow(this)"/></td>
<td><input type="button" id="addmorebutton0" value="Add Row Below" onclick="addRow(this)"/></td>
</tr>
</table>
You can do this very easily with jQuery:
var $lastRow = $("table#Table tr:last-child");
var $newRow = $lastRow.clone()
$newRow.find("input[type=text]").val(''); //empty all the values in text inputs
$("table#Table").append( $newRow );
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table id="Table" border="1">
<tr>
<td><b>Measured Depth</b></td>
<td><b>Inclination</b></td>
<td><b>Azimuth</b></td>
<td><b>Delete?</b></td>
<td><b>Add Row?</b></td>
</tr>
<tr>
<td><input size=25 type="text" id="Measured Depth0[]" contenteditable="true" value='339'></td>
<td><input size=25 type="text" id="Inclination0[]" contenteditable='true' value='0.540000021'></td>
<td><input size=25 type="text" id="Azimuth0[]" contenteditable='true' value='310.7200012'></td>
<td><input type="button" id="delbutton0" value="Delete" onclick="deleteRow(this)"/></td>
<td><input type="button" id="addmorebutton0" value="Add Row Below" onclick="addRow(this)"/></td>
</tr>
</table>
Add this line of code to your function to empty values in HTML code:
function addRow(row)
{
var i = row.parentNode.parentNode.rowIndex;
var tr = document.getElementById('Table').insertRow(i+1);
tr.innerHTML = row.parentNode.parentNode.innerHTML;
tr.innerHTML = tr.innerHTML.replace(/value='.*'/, "value=''"); //this will remove all values from your html
tr.children[0].innerHTML = tr.parentNode.querySelectorALL("tr").length-1;
}
Using JQuery:
function addRow(){
var t = $("#Table tr").last().clone();
t.find("input").each(function(i,element) {
$(element).val("");
});
t.appendTo("#Table");
}
I can suggest you do this - define table rows in javascript and add those directly. Also, use th for table headers
function edit_row(no) {
document.getElementById("edit_button" + no).style.display = "none";
document.getElementById("save_button" + no).style.display = "block";
// get elements
var measured = document.getElementById("measured_row" + no);
var inclination = document.getElementById("inclination_row" + no);
var azimuth = document.getElementById("azimuth_row" + no);
// get their values
var measured_data = measured.innerHTML;
var inclination_data = inclination.innerHTML;
var azimuth_data = azimuth.innerHTML;
// replace by editable input tags
measured.innerHTML = "<input type='text' id='measured_text" + no + "' value='" + measured_data + "'>";
inclination.innerHTML = "<input type='text' id='inclination_text" + no + "' value='" + inclination_data + "'>";
azimuth.innerHTML = "<input type='text' id='azimuth_text" + no + "' value='" + azimuth_data + "'>";
}
function save_row(no) {
// same as in edit function
var measured_val = document.getElementById("measured_text" + no).value;
var inclination_val = document.getElementById("inclination_text" + no).value;
var azimuth_val = document.getElementById("azimuth_text" + no).value;
document.getElementById("measured_row" + no).innerHTML = measured_val;
document.getElementById("inclination_row" + no).innerHTML = inclination_val;
document.getElementById("azimuth_row" + no).innerHTML = azimuth_val;
document.getElementById("edit_button" + no).style.display = "block";
document.getElementById("save_button" + no).style.display = "none";
}
function delete_row(no) {
document.getElementById("row" + no + "").outerHTML = "";
}
function add_row() {
var new_measured = document.getElementById("new_measured").value;
var new_inclination = document.getElementById("new_inclination").value;
var new_azimuth = document.getElementById("new_azimuth").value;
var table = document.getElementById("data_table");
var table_len = (table.rows.length) - 1;
var row = table.insertRow(table_len).outerHTML = "<tr id='row" + table_len + "'><td id='measured_row" + table_len + "'>" + new_measured + "</td><td id='inclination_row" + table_len + "'>" + new_inclination + "</td><td id='azimuth_row" + table_len + "'>" + new_azimuth + "</td><td><input type='button' id='edit_button" + table_len + "' value='Edit' class='edit' onclick='edit_row(" + table_len + ")'> <input type='button' id='save_button" + table_len + "' value='Save' class='save' onclick='save_row(" + table_len + ")'> <input type='button' value='Delete' class='delete' onclick='delete_row(" + table_len + ")'></td></tr>";
document.getElementById("new_measured").value = "";
document.getElementById("new_inclination").value = "";
document.getElementById("new_azimuth").value = "";
}
<table align='center' cellspacing=2 cellpadding=5 id="data_table" border=1>
<tr>
<th>Measured Depth</th>
<th>Inclination</th>
<th>Azimuth</th>
</tr>
<tr id="row1">
<td id="measured_row1">339</td>
<td id="inclination_row1">0.540000021</td>
<td id="azimuth_row1">310.7200012</td>
<td>
<input type="button" id="edit_button1" value="Edit" class="edit" onclick="edit_row('1')">
<input type="button" id="save_button1" value="Save" class="save" onclick="save_row('1')">
<input type="button" value="Delete" class="delete" onclick="delete_row('1')">
</td>
</tr>
<tr>
<td><input type="text" id="new_measured"></td>
<td><input type="text" id="new_inclination"></td>
<td><input type="text" id="new_azimuth"></td>
<td><input type="button" class="add" onclick="add_row();" value="Add Row"></td>
</tr>
</table>
I have a web page for applying. In this web page, rows are dynamic add after addp button clicked.I can add new row successfully with addPf() method. And these input name attribute should be enName0, enName1, enName2....., but it works fail with name="enName"+aDWI.
Here is my html code:
<div>
<table>
<tr>
<td>
<input type="button" id="addP" onclick="addPf()" value="addPeople">
</td>
</tr>
<tr>
<td>
new row added in here;
</td>
</tr>
</table>
</div>
Here is my javascript code:
<script>
var aDWI=0;
function addPf()
{
newrow = '<tr><td><input style="width:98%" name="enName"+aDWI></td></tr>';
$(newrow).insertAfter($('#staTable tr:eq('+aDWI+')'));
aDWI = aDWI + 1;
}
</script>
name="enName"+aDWI is not right.I have no idea about this, who can help me ?
Change from
newrow = '<tr><td><input style="width:98%" name="enName"+aDWI></td></tr>';
to
newrow = '<tr><td><input style="width:98%" name="enName'+aDWI+'"></td></tr>';
The issue is because you need to concatenate the variable in the string correctly, using the ' character.
Also note that you should really be using unobtrusive event handlers instead of the outdated on* event attributes. In addition, you can simplify the logic by using jQuery's append(), like this:
var aDWI = 0;
$('#addP').click(function() {
newrow = '<tr><td><input style="width:98%" name="enName' + aDWI + '" value="' + aDWI + '"></td></tr>';
$('#staTable').append(newrow);
aDWI = aDWI + 1;
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
<table id="staTable">
<tr>
<td>
<input type="button" id="addP" value="addPeople">
</td>
</tr>
<tr>
<td>
new row added in here;
</td>
</tr>
</table>
</div>
Just update it with
<script>
var aDWI=0;
function addPf()
{
newrow = '<tr><td><input style="width:98%" name="enName'+aDWI+'"></td></tr>';
$(newrow).insertAfter($('#staTable tr:eq('+aDWI+')'));
aDWI = aDWI + 1;
}
</script>
I am trying to build a table that will allow users to change the value of a cell(s) and then "submit" that data
to a JavaScript (only please) method that turns the tables data into a json dataset.
I started by trying to updated the value of just one field. QTY in this case. I am able to loop over the table and get the static values, but I am not able to catch the user input value.
question: What is a JavaScript only (if possible) way to capture user change(able) values from a table?
function updateQTY() {
//getData from table
//gets table
var lines = "";
var oTable = document.getElementById('items');
//gets rows of table
var rowLength = oTable.rows.length;
var line = "";
//loops through rows, skips firts row/header
for (i = 1; i < rowLength; i++) {
//gets cells of current row
var oCells = oTable.rows.item(i).cells;
var qty = oCells.item(2).innerHTML;
//alert("qty: " + wty);
qty = qty.substr(oCells.item(2).innerHTML.indexOf('value=') + 7);
qty = qty.substr(0, qty.indexOf('" class='));
//alert(qty);
line = line +
'{ "item": "' + oCells.item(0).innerHTML + '",' +
' "discription": "' + oCells.item(1).innerHTML + '",' +
' "qty": "' + qty + '"},'
}
//alert(line);
var jsonData = JSON.parse('[' + line + '{"quickwayto":"dealwith,leftbyloop"}]');
alert("lines: " + JSON.stringify(jsonData));
}
<form action='#'>
<table class='mdl-data-table mdl-js-data-table' id='items'>
<thead>
<tr>
<th>item</th>
<th>discription</th>
<th>QTY</th>
</tr>
</thead>
<tbody>
<tr>
<td class='mdl-data-table__cell--non-numeric'> widget_1 </td>
<td class='mdl-data-table__cell--non-numeric'>it's fun</td>
<td>
<div class='mdl-textfield mdl-js-textfield'><input type='text' name='qty1' id='value1' value='5' class='mdl-textfield__input'></div>
</td>
</tr>
<tr>
<td class='mdl-data-table__cell--non-numeric'> widget_2 </td>
<td class='mdl-data-table__cell--non-numeric'>it's super fun</td>
<td>
<div class='mdl-textfield mdl-js-textfield'><input type='text' name='qty2' id='value2' value='5' class='mdl-textfield__input'></div>
</td>
</tr>
</tbody>
</table>
<div>
<input type='button' value='update' onclick='updateQTY()' class='mdl-button mdl-js-button mdl-button--raised mdl-js-ripple-effect'>
</div>
</form>
THANK YOU
Instead of selecting the entire td element, retrieve only what you really need using querySelector (or use jQuery if possible). Find the input element and access the value, it's a lot easier than doing all of that unecessary parsing of the inner html of the entire cell.
function updateQTY() {
//getData from table
//gets table
var lines = "";
var oTable = document.getElementById('items');
//gets rows of table
var rowLength = oTable.rows.length;
var line = "";
//loops through rows, skips firts row/header
for (i = 1; i < rowLength; i++) {
//gets cells of current row
var oCells = oTable.rows.item(i).cells;
var qty = oCells.item(2).querySelector(".mdl-textfield__input").value;
line = line +
'{ "item": "' + oCells.item(0).innerHTML + '",' +
' "discription": "' + oCells.item(1).innerHTML + '",' +
' "qty": "' + qty + '"},'
}
//alert(line);
var jsonData = JSON.parse('[' + line + '{"quickwayto":"dealwith,leftbyloop"}]');
alert("lines: " + JSON.stringify(jsonData));
}
<form action='#'>
<table class='mdl-data-table mdl-js-data-table' id='items'>
<thead>
<tr>
<th>item</th>
<th>discription</th>
<th>QTY</th>
</tr>
</thead>
<tbody>
<tr>
<td class='mdl-data-table__cell--non-numeric'> widget_1 </td>
<td class='mdl-data-table__cell--non-numeric'>it's fun</td>
<td>
<div class='mdl-textfield mdl-js-textfield'><input type='text' name='qty1' id='value1' value='5' class='mdl-textfield__input'></div>
</td>
</tr>
<tr>
<td class='mdl-data-table__cell--non-numeric'> widget_2 </td>
<td class='mdl-data-table__cell--non-numeric'>it's super fun</td>
<td>
<div class='mdl-textfield mdl-js-textfield'><input type='text' name='qty2' id='value2' value='5' class='mdl-textfield__input'></div>
</td>
</tr>
</tbody>
</table>
<div>
<input type='button' value='update' onclick='updateQTY()' class='mdl-button mdl-js-button mdl-button--raised mdl-js-ripple-effect'>
</div>
</form>
You need to use document.getElementById('value2').value instead of .innerHTML.indexOf('value=')
You're making yourself a lot of work here. You have a table. All you need to do is convert that to JSON. I would suggest you look at the library below that does that in around one line of native java-script.
http://www.developerdan.com/table-to-json/