Develop Reference

Modify innerHTML for table row in javascript in ie8?

I am trying to add create an editable table in HTML. So, I need to add rows, when user clicks on a button. Here is the code I am using.
//remove all old rows.
while (summaryTableElement.firstChild) {
summaryTableElement.removeChild(summaryTableElement.firstChild);
}
//add a new text area in the summary field.
summaryTableElement.innerHTML = "<textarea id='summaryTextBox' value='' onblur='saveSummary()'> </textarea> ";
This code works fine on Chrome and Mozilla. But, IE doesn't allow editing innerHTML. This HTML will be displayed inside a VB form, so I have "browser" and "webbrowser" controls available. Both of those controls use IE engine, so this code does not work there.
I have tried using firstchild.innerHTML instead so that I am not editing table row directly, and even that gave me same error.
I tried using WebKitBrowser. But, that causes an exception on load. Apparently that control uses some old method, and the method is changed. So, that control is out of question too.
Now, I am confused as to how to solve this problem?
Edit:
I found the issue with WebKitBrowser. It was specific to x86, while my project was targeting both x64 and x86. Switching it to x86 for both, worked. Although, webkit browser do not take return key values. So, I have a new problem. Pressing enter does not create a new line in table cell, and instead passes the event to vb form.
Edit:
Okay, so I tried working further with WebKitBrowser. But, that control gives me accessviolatedexception. So, I am thinking about going back to using the default browser control, for now.
As for default control, I checked further. Apparently, code works fine in IE9 and above. But, vb.net control uses some weird JS engine. So, I am receiving error only in vb control.
Here is the complete code for reference:
var summaryChanges = "";
var isSummaryClickable = true;
//creates a textbox for editing purpose and include the original summary data.
function modifySummary(id) {
var summaryTableElement; //to get the table cells so that we can access the value
var originalSummary = ""; //to hold the original summary while we create a text box
var loopCounter = 0;
if (isSummaryClickable == true) {
isSummaryClickable = false; //saves event spilling when clicked on the newly created textbox
//get the summary table id saved.
summaryTableElement = document.getElementById (id).childNodes.item(0);
//add existing data to a string to save it for later.
for (loopCounter = 0; loopCounter < summaryTableElement.childNodes.length; loopCounter++) {
originalSummary = originalSummary + summaryTableElement.childNodes.item(loopCounter).childNodes.item(0).innerHTML + "\n";
}
//remove all old rows.
while (summaryTableElement.firstChild) {
summaryTableElement.removeChild(summaryTableElement.firstChild);
}
//add a new text area in the summary field.
summaryTableElement.innerHTML = "<tr><td><textarea id='summaryTextBox' value='' onblur='saveSummary()'> </textarea></td></tr> ";
//set the width of the textbox to allow easy modification
document.getElementById("summaryTextBox").style.width = '600px';
//add original summary text to the text area and set focus
document.getElementById("summaryTextBox").value = originalSummary;
document.getElementById("summaryTextBox").focus();
}
}
// saves the updated summary data back to HTML
function saveSummary()
{
var newHTML = "";
var changesSummary;
var changesSubString = new Array();
var index = 0;
var elementToUpdate;
//get the summary table id saved.
elementToUpdate = document.getElementById("SummaryData"); //.childNodes.item(0);
//get changes from the textbox
changesSummary = document.getElementById("summaryTextBox").value;
//generate string array for separate lines from summaryChanges
changesSubString = changesSummary.split("\n");
//generate new HTML string for the summary fields
//alert(changesSubString.length);
for (index = 0; index < changesSubString.length; index++) {
newHTML = newHTML + "<tr><td class='Text' style='padding-left: 4px;padding-bottom: 4px;' id='SummaryLine" + index + "'</td>" + changesSubString[index] + "</tr>"
}
//update the HTML to the element
elementToUpdate.innerHTML = newHTML;
//allow clicking on summary table
isSummaryClickable = true;
}
function doNothing(id) {
//empty function for future use
return;
}
//this function is called from vb.net script to read the js variable.
//do not change the function definition (name or parameters or return type)
//any change will cause error in vb.net script
function jsInvokedFunction() {
var updatedHTML; // to be used by vb.net invoked function to get updated body
var testVariable = "test";
updatedHTML = document.body.innerHTML.toString();
return updatedHTML.toString();
}
I receive an error at the start of the line summaryTableElement.innerHTML = " ";
It is possible I am missing some other error, but I couldn't find any.

Reading and formatting Access data

I'm using JavaScript and HTA to read data in access database (.mdb) on local but having a small issue. My JavaScript code is like this:
function miseryBusiness() {
var box = document.getElementById("lyrics");
box.innerHTML = "";
var db = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source='paramore.mdb'";
var adoConn = new ActiveXObject("ADODB.Connection");
var adoRS = new ActiveXObject("ADODB.Recordset");
adoConn.Open(db);
adoRS.Open("SELECT * from 2007_RIOT WHERE track=4", adoConn, 1, 3);
var lyrics = adoRS.Fields("lyrics").value;
box.innerText = lyrics;
adoRS.Close();
adoConn.Close();
}
I have a div in the page with id="lyrics". Function gets the specified cell's value and change's div's inner text to that value.
What I want to do is use innerHTML instead of innerText. And if I use inner HTML I get the cell's value as a single line. I want to add line breaks to the end of the each line. Also an anchor to the beginning of the text.
If I was getting the text from a .txt file I'd use
while(!lyrics.AtEndOfStream) {
box.innerHTML += '<a id="miseryBusiness">' + lyrics.ReadLine() + '<br/>';
}
but this doesn't work with access database. Or I couldn't get it to work. Any ideas?
The HTA and .mdb file I'm using: link1 link2

If the lyrics are in a Memo field with hard line-breaks then the line terminator is almost certainly <cr><lf>, so try the following:
box.innerHTML = '<a id="miseryBusiness">' + lyrics.replace(/\r\n/g, '<br/>');

Dynamically loaded form won't update correctly

I have a form which is loaded into the page using .load(). I want to update the form with the HTML I compute in str, but my code isn't updating the form correctly. Why?
if($(this).is('.step3')){
//Splits the comma seperated values into input fields
var active_fields = ($('#templateFields').val()).split(',');
$('#loadedcontent').load('template.html #step3',function(){
$('#steps').text('Step Three');
$('#start.btn').text('Save Template & Values').removeClass('step3').addClass('step4');
});
str = "";
for(var i = 0; i<active_fields.length; i++){
str += '<label>'+active_fields[i]+'</label><input name="'+active_fields[i]+'" type="text" class="span3">';
}
$('form#values.well').html(str);
}

You have to put the form modification in the load completion function like this:
if($(this).is('.step3')){
//Splits the comma seperated values into input fields
var active_fields = ($('#templateFields').val()).split(',');
$('#loadedcontent').load('template.html #step3',function(){
$('#steps').text('Step Three');
$('#start.btn').text('Save Template & Values').removeClass('step3').addClass('step4');
str = "";
for(var i = 0; i<active_fields.length; i++){
str += '<label>'+active_fields[i]+'</label><input name="'+active_fields[i]+'" type="text" class="span3">';
}
$('form#values.well').html(str);
});
}
The way you were doing it, your code to modify the form was running before the form finished loading so it wouldn't find the content and thus couldn't modify it.

Sorry, I figured i couldnt nest a form within a form. I think thats why it didnt work

Is there a limit of the size of data using replaceWIth in jQuery?

I am using the replaceWith() function in jQuery to update my web page. I receive the data from a C# web service program that extracts data from a database to build my HTML code. It works fine except when I replace large amounts of data. In the example that's not working, I replace code in my web page with 39000 bytes of data. After that, none of my links work when clicking on a span to calls a JavaScript function. Is there a limit on the size of data used in the replaceWith() function? The html code I am replacing looks like this:
<td align=left valign=top>
<div id="showitems" class="showitems" style="display:inline; float:left"></div>
</td>
The javascript code looks like this:
function ShowDinerItems() {
var gps = document.getElementById("selectdiner").value;
var pos = gps.indexOf(";");
var len = gps.length;
var latitude = document.getElementById("Hiddenlat").value;
var longitude = document.getElementById("Hiddenlng").value;
var dinerkey = gps.substring(0, pos);
PageMethods.CallShowDinerItems(dinerkey, latitude,longitude, OnShowDinerComplete, OnShowDinerError, dinerkey);
}
function OnShowDinerComplete(result) {
var htmlcode = result[0];
if (result == 'none') {
document.getElementById("Message").value = "Search returned no items";
}
else {
var htmlcode = result[0];
htmlcode = "<div id=\"showitems\" class=\"showitems\" style=\"display:inline\">" + htmlcode + "</div>";
$('.showitems').replaceWith(htmlcode); // size of htmlcode is 39849 bytes
var locations = result[1].split(";");
var lat = locations[0];
var lng = locations[1];
markDiner(lat, lng, "", 'map_canvas');
}
}
The reason I am using jquery to build my webpage is to avoid page reloads. I could easily program the webdata content in my C# program which may be more efficient but page reloads are to be avoided as dictated by the people who own the website. I am will try the recommendations given.
Note: I used the following code to make it work.
$('.showitems').html(result[0]);
Using .text will not work as it displays raw data and not html data. Thanks to those who contributed.

To be honest I think you're going about this the wrong way here.
It seems to me that you're using ReplaceWith to completely overwrite the matched tag when you could just as simply change its properties with jQuery.
For example:
var htmlcode = result[0];
htmlcode = "<div id=\"showitems\" class=\"showitems\" style=\"display:inline\">" + htmlcode + "</div>";
$('.showitems').replaceWith(htmlcode); // size of htmlcode is 39849 bytes
Could easily be changed to this:
$('.showitems').css('float','none').text(result[0]);
Just how many showItems are there going to be by the way, and how do you know how it compares to how many results you get back from the C# call ?
Edit 2: Sorry, didn't realise that the CSS display attribute wasn't actually changing.

Match a String in a Webpage along with HTML tags

With below code, I am trying to match a text in a web page to get rid of html tags in a page.
var body = $(body);
var str = "Search me in a Web page";
body.find('*').filter(function()
{
$(this).text().indexOf(str) > -1;
}).addClass('FoundIn');
$('.FoundIn').text() = $('.FoundIn').text().replace(str,"<span class='redT'>"+str+"</span>");
But it does not seems to work.. Please have a look at this and let me know where the problem is...
here is the fiddle
I have tried the below code instead..
function searchText()
{
var rep = body.text();
alert(rep);
var temp = "<font style='color:blue; background-color:yellow;'>";
temp = temp + str;
temp = temp + "</font>";
var rep1 = rep.replace(str,temp);
body.html(rep1);
}
But that is totally removing html tags from body...

change last line of your code to below one...you are using assignment operator which works with variables not with jquery object ..So you need to pass the replaced html to text method.
$('.FoundIn').text($('.FoundIn').text().replace(str,"<span class='redT'>"+str+"</span>"))

try this.
$('*:contains("Search me in a Web page")').text("<span class='redT'>Search me in a Web page</span>");