I'm a total javascript noobie. I developed the code bellow following and modifing some random tutorial I found.
It should add and remove rows with input fields at a table, however, it does nothing. It also worth saying that I called the function as a link. I added 'javascript:addRow()' inside the tag and at the header. Did I missed something?
function addRow(){
tableID="ticketCreate";
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
if(rowCount<7){
var row = table.insertRow(rowCount);
var cel1=row.insertCell(0);
var element1= document.createElement("input");
var element1.type="text";
cell1.appendChild(element1);
var cell2=row.insertCell(1);
var element2.type="text";
cell1.appendChild(element2);
var cell2=row.insertCell(2);
var element3.type="text";
cell1.appendChild(element3);
rowCount++;
}
}
function removeRow(){
tableID="ticketCreate";
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
if(rowCount>1){
table.deletRow(rowCount);
rowCount--;
}
}
You have several errors, but here is the basic working model. I think you should be able to sort it out from here
http://jsfiddle.net/dBzkX/
function addRow() {
var tableID="ticketCreate";
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
if(rowCount<7){
//You declared var in front of the same variable twice. Don't do that.
//You were appending cells inside existing cell. Add them to row instead.
var row = table.insertRow(rowCount);
var cell1 = row.insertCell(0);
var element1 = document.createElement('input');
element1.type="text";
cell1.appendChild(element1);
row.insertCell(1);
row.insertCell(2);
}
}
function removeRow(){
var tableID="ticketCreate";
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
if(rowCount>1){
//you had type in deletRow. Also, you can pass in -1 to remove the last row
table.deleteRow(-1);
}
}
The error is here:
var element1= document.createElement("input");
var element1.type="text";
It should be
var element1= document.createElement("input");
element1.type="text";
and similar for the other elements.
You declare the variable with
var element1 = 'something';
and then access it with
element1 = 'something different';
Also there is a typo in
var cel1=row.insertCell(0);
It needs to be
var cell1=row.insertCell(0);
Additionally you did not define element 2 and 3,
used cell2 twice where it should be cell2 and cell3 and only appended to cell1.
Related
function addRow(tableID) {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var row = table.insertRow(rowCount);
var cell1 = row.insertCell(0);
var element1 = document.createElement("input");
element1.type = "checkbox";
element1.name="chkbox[]";
cell1.appendChild(element1);
var cell2 = row.insertCell(1);
cell2.innerHTML = rowCount;
var cell3 = row.insertCell(2);
var element2 = document.createElement("input");
element2.type = "text";
element2.name = "item";
element2.size = "40";
cell3.appendChild(element2);
var cell4 = row.insertCell(3);
var element3 = document.createElement("input");
element3.type = "text";
element3.name = "qty";
element3.style ="text-align: right";
cell4.appendChild(element3);
}
I am creating a set of columns using this code and by using a button action I am adding such rows continuously to the page.
Now along with this, I want to simultaneously add these values to SQL database.
Plus whenever i revisit this page I should have the previously entered data.
The setup have 3 buttons Delete Row, Add Row and Save.
I want to get all the rows into Database once I click Save.
I want to enter the values of "cell1" and "cell2" dynamically in the table instead of using the static values "one" and "two".
How to do it?
function myFunction() {
var table = document.getElementById("myTable");
var row = table.insertRow(4);
var cell1 = row.insertCell(0);
var cell2 = row.insertCell(1);
//cell2 = document.getElementById('cell2');
cell1.innerHTML = "One";
cell2.innerHTML = "two";
}
If you are just starting to learn JS, then may be what you are looking for is prompt
<script>
function myFunction() {
var table = document.getElementById("myTable");
var row = table.insertRow(4);
var cell1 = row.insertCell(0);
var cell2 = row.insertCell(1);
//cell2 = document.getElementById('cell2');
var one, two;
one = prompt("Please enter first value");
two = prompt("Please enter second value");
cell1.innerHTML = one;
cell2.innerHTML = two;
}
</script>
However, this is not how things are done in real solutions to real world problems.
I have the following js code in my jsp. Im not able to retain those textbox values below after the page is refreshed. Any idea how to retain the values?
Im calling this js function onclick of a html button so that it dynamically adds the row to the table.
<script>
function addRow(tableID) {
if(validateForm()==true){
document.getElementById('cruisedowntime2').style.display = "block";
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var row = table.insertRow(rowCount);
/* var cell1 = row.insertCell(0);
var element1 = document.createElement("input");
element1.type = "checkbox";
element1.name = "chkbox[]";
element1.defaultChecked="true";
cell1.appendChild(element1);*/
var cell0 = row.insertCell(0);
var element0=document.createElement("select");
element0.name="cruiselinedropdown";
var dropdownlist1=document.getElementById("droplist1");
var defaultselected=dropdownlist1.options[dropdownlist1.selectedIndex].value;
//window.location.replace("http://localhost:8085/Bridge_Downtime_Utility/Servlet?var="+defaultselected);
<%Map<String, String> map = new HashMap<String,String>();
for (int i = 0; i < crsenamelist.size(); i++) {
map.put(crsenamelist.get(i),crsecodelist.get(i));
}
%>
element0.options.add( new Option(defaultselected,defaultselected,true,true) );
element0.options.add( new Option("--","") );
<%
for(Map.Entry m:map.entrySet()){ %>
element0.options.add( new Option("<%=m.getValue()%>","<%=m.getValue()%>") );
cell0.appendChild(element0);<%}%>
var textbox3=document.getElementById('starttime');
var textbox7=document.getElementById('startdate');
var cell2 = row.insertCell(1);
var element2 = document.createElement("input");
element2.title="Date: YYYY-MM-DD";
element2.type = "text";
element2.name = "starttimetextbox";
element2.value=textbox7.value+" "+textbox3.value;
cell2.appendChild(element2);
var textbox5=document.getElementById('endtime');
var textbox9=document.getElementById('enddate');
var cell3 = row.insertCell(2);
var element3 = document.createElement("input");
element3.title="Date: YYYY-MM-DD";
element3.type = "text";
element3.name = "endtimetextbox";
element3.value=textbox9.value+" "+textbox5.value;
cell3.appendChild(element3);
var textbox1=document.getElementById('descrip');
var cell4 = row.insertCell(3);
var element4 = document.createElement("input");
element4.type = "text";
element4.name = "descriptextbox";
if(textbox1.value==''){element4.value="-";}
else
element4.value=textbox1.value;
cell4.appendChild(element4);
//cell4.contenteditable=true;
/* var addRowBox = document.createElement("input");
addRowBox.setAttribute("type", "button");
addRowBox.setAttribute("value", "Edit");
var cell5 = row.insertCell(5);
cell5.appendChild(addRowBox);*/
var deleteRowBox = document.createElement("input");
deleteRowBox.setAttribute("type", "button");
deleteRowBox.setAttribute("value", "X");
deleteRowBox.setAttribute("onclick","SomeDeleteRowFunction(this)");
var cell6 = row.insertCell(4);
cell6.appendChild(deleteRowBox);
}}
</script>
You can store data and then load from localStorage if you want it to persist after page refresh.
To keep your data upon page refresh you need to save it somewhere, for future (after page reload) access.
Store it somewhere at your backend, and then access your, for instance, REST service upon page load.
Store it in localStorage\sessionStorage in browser.
There are no other ways to keep data without actually keeping it :)
I tried to add a virtual keyboard to my code using jQuery, in fact I have several text fields and I added to each on this keyboard.
My problem is when I load the page it take a lot of times (~ 10 seconds) to display.
This is my Demo.
Code:
var table = document.getElementById("Table-1");
var rowCount = table.rows.length;
for(var i=0;i<150;i++) {
row = table.insertRow(rowCount);
cell1 = row.insertCell(0);
cell1.name = "animate";
cell1.id = i ;
var values = document.createElement("input");
values.type = "text" ;
cell1.appendChild(values);
rowCount++;
}
$('input[type=text]').keyboard({
layout: "qwerty"
});
A first solution to my problem ; I only call the keyboard when I click in the text box.
Demo.
But it's still a bit slow...
Code :
var table = document.getElementById("Table-1");
var rowCount = table.rows.length;
for(var i=0;i<150;i++) {
row = table.insertRow(rowCount);
cell1 = row.insertCell(0);
cell1.name = "animate";
cell1.id = i ;
var values = document.createElement("input");
values.type = "text" ;
cell1.appendChild(values);
rowCount++;
$('#'+i).click(function() {
$('input[type=text]').keyboard({
layout: "qwerty"
});
});
}
I'm trying to design a table in HTML which can add a row when I click "add row" button & the same for deleting an added row if i intend to delete it. I have written a javascript for adding checkbox and text. But I want even combo-boxes in it and I m stuck in the middle. Could you guys just figure it out and let me know how to do that?
This is my JS file.
function addRow(tableID) {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var row = table.insertRow(rowCount);
var cell1 = row.insertCell(0);
var element1 = document.createElement("input");
element1.type = "checkbox";
cell1.appendChild(element1);
var cell2 = row.insertCell(1);
cell2.innerHTML = rowCount + 1;
var cell3 = row.insertCell(2);
var element2 = document.createElement("input");
element2.type = "text";
cell3.appendChild(element2);
var cell4 = row.insertCell(3);
var element3 = document.createElement("input");
element3.type = "text";
cell4.appendChild(element3);
var cell5 = row.insertCell(4);
//This is where the PROBLEM is!!
var element4 = document.createElement("select");
element4.type = "option";
cell5.appendChild(element4);
}
function deleteRow(tableID) {
try {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
for(var i=0; i<rowCount; i++) {
var row = table.rows[i];
var chkbox = row.cells[0].childNodes[0];
if(null != chkbox && true == chkbox.checked) {
table.deleteRow(i);
rowCount--;
i--;
}
}
}catch(e) {
alert(e);
}
}
// JavaScript Document
NOTE: Please dont suggest SERVER_SIDE SCRIPTING. I'm just doing my homework on Java Script :)
This should do the trick:
var cell5 = row.insertCell(4);
//This is where the SOLUTION is!!
var element4 = document.createElement("select");
var option1 = document.createElement("option");
option1.value="1";
option1.innerHTML="sample1";
element4.appendChild(option1);
var option2 = document.createElement("option");
option2.value="2";
option2.innerHTML="sample2";
element4.appendChild(option2);
cell5.appendChild(element4);
Try to think of the outcome that you wish to get. In this case you wish to have HTML that looks like this:
<select>
<option></option>
<option></option>
</select>
So the question is what elements are there? There are three in my example, a select and two options. So in your JavaScript how do you create elements?
var element4 = document.createElement("select");
This creates a select. So how would you create an option?
var option1 = document.createElement("option");
maybe?
how would you add the option to the select? Same way you add the select to the cell.
element4.appendChild(option1);
then create the other options that you need and add the select to the cell.
why not trying
var sel=document.createElement("select");
// repeat this for each option you have
var opt=document.createElement("option");
opt.value="my option value";
opt.text="my option to be displayed";
sel.appendChild(opt);
// end repeat
cell5.appendChild(sel);