Here's my problem:
I have a JavaScript function inside of a JSP that looks like this:
<script type="text/javascript">
function generateTable()
{
var temp = '';
temp = temp + '<logic:iterate name="dataList" id="dto" indexId="dtoIndex" >';
temp = temp + '<logic:equal name="dtoIndex" value="0">';
temp = temp + '<thead>';
temp = temp + '<tr class="topexpression7"></tr></thead><tbody></logic:equal>';
temp = temp + '<tr>';
var propertyArray = new Array('"title"','"jDate"','"employeeId"','"employeeName"');
var arrayLength = propertyArray.length;
var html = '';
var i=0;
for (i=0; i<arrayLength; i++)
{
if (i == 2)
{
// left
html = html + '<logic:present name="dto" property=' + propertyArray[i] + '><td class="left"> <bean:write name="dto" property=' + propertyArray[i] + '/></td></logic:present>';
}
else if (i == 3)
{
// Only applies to this property
html = html + '<logic:present name="dto" property="employeeName">';
html = html + '<td class="left" style="white-space:nowrap;"> ';
html = html + '<nobr><bean:write name="dto" property="employeeName"/>';
html = html + '</nobr></td></logic:present>';
}
else
{
// center
html = html + '<logic:present name="dto" property=' + propertyArray[i] + '><td class="center"> <bean:write name="dto" property=' + propertyArray[i] + '/></td></logic:present>';
}
}
temp = temp + html + '</logic:iterate></tbody>';
// Write out the HTML
document.writeln(temp);
}
</script>
If I hard code the property like where (i == 3), it works fine. Renders as expected.
But by trying to parse a string dynamically (where i <> 3), the string var "html" is null every time. Admittedly, my JavaScript is average at best. I'm sure it's an easy fix, but darned if I can figure it out!
P.S. Long story as to why I'm going this route, and I'll spare you the story (you're welcome). I just want to know why the variable propertyArray[i] isn't working.
The JSP is rendered on the server and JavaScript on the client browser, but to render properly the JSP tags should be well formed, i.e. have all necessary attributes with valid values, begin and close tag, etc. But not all your tags are valid. First your JSP compiled on the server and it can't process the bad JSP tags. When i != 3 you have that bad JSP tags. When the JSP is compiled the JavaScript code is used like a content, it has less meaning for the JSP compiler because it is looking on the tags that correspond a JSP syntax. Looking by the eyes of the JSP compiler you'll see the logic:present tag has attribute property but has not a value because propertyArray[i] is not evaluated as a JSP expression, it simply breaks the tag boundary. So the Tag is not compiled properly. If you place JSP tags into JavaScript code make sure they're consistent.
propertyArray[i] is working; it's the rest of it that isn't (and won't).
JSP tags don't execute on the client side; HTML generated in JavaScript must not include JSP tags (unless you don't care if they don't run). Instead, the JavaScript itself must be generated using tags on the server side before it's sent to the browser.
In this case, however, it might be best to just render HTML returned from an Ajax request, though, depending on what you're really trying to do, or create it all in JSP (not JS), etc.
Related
I am trying to use a for loop in html but i dont even know if this is possible. Is it? and if yes how? I dont want to use php. only html and javascript.
this is my goal: i have a file containing .txt files. i want to count the number of txt files and when i get the number i want to send it to where i will use a for loop to put the txt file's numbers in a dropbox.
Thanks
Lots of answers.... here is another approach NOT using document.write OR innerHTML OR jQuery....
HTML
<select id="foo"></select>
JS
(function() { // don't leak
var elm = document.getElementById('foo'), // get the select
df = document.createDocumentFragment(); // create a document fragment to hold the options while we create them
for (var i = 1; i <= 42; i++) { // loop, i like 42.
var option = document.createElement('option'); // create the option element
option.value = i; // set the value property
option.appendChild(document.createTextNode("option #" + i)); // set the textContent in a safe way.
df.appendChild(option); // append the option to the document fragment
}
elm.appendChild(df); // append the document fragment to the DOM. this is the better way rather than setting innerHTML a bunch of times (or even once with a long string)
}());
And here is a Fiddle to demo it.
Yes you can for example
write this code in html body tag
<select>
<script language="javascript" type="text/javascript">
for(var d=1;d<=31;d++)
{
document.write("<option>"+d+"</option>");
}
</script>
</select>
HTML
<select id="day" name="day"></select>
<script type='text/javascript'>
for(var d=1;d<=31;d++)
{
var option = "<option value='" + d + "'>" + d + "</option>"
document.getElementById('day').innerHTML += option;
}
</script>
May be you can play with javascript and innerHTML. Try this
HTML
<body onload="selectFunction()">
<select id="selectId">
</select>
Javascript
function selectFunction(){
var x=0;
for(x=0;x<5;x++){
var option = "<option value='" + x + "'>Label " + x + "</option>"
document.getElementById('selectId').innerHTML += option;
}
}
One way is to use DynamicHTML. Let the html page have a place holder for the options of select tag.
<select id="selectBox"></select>
In a js file
var options = ["one","two","three"], selectHtml = "";
for(var optionIndex = 0; optionIndex < options.length; optionIndex++) {
selectHtml += ("<option>" + options[optionIndex] + "</option>");
}
document.getElementById("selectBox").innerHTML = selectHtml;
Put the above code in a function and call that function onload.
No you can't use a for loop in HTML. HTML is a markup language, you cannot use logical code. However you could use javascript to do your logic depending on what your objective is.
Here is an example using jQuery, a popular javascript library:
for(i=0; i<5; i++){
$("select").append("<option>" + i + "</option>");
}
See example: http://jsfiddle.net/T4UXw/
HTML is not a programming language, just a markup language, so it doesn't include things like for loops or if statements. Javascript does though. You could use javascript to generate/manipulate the HTML, and thus use for loops to create your <option> tags inside the <select>. As a startup for javascript see checkout w3schools.com
I don't like using plain javascript though, I would rather choose a javascript framework like jQuery to do this. Using jquery it is really easy to do cross-platform compatible manipulation of the HTML dom using javascript. You would only need to include some extra javascript files inside your HTML to get it working.
See http://jquery.com/
An example of using jquery would be this:
<select id='myselect'></select>
<script type='text/javascript'>
var values=[[1,'tree'],[2,'flower'],[3,'car']];
for(v in values){
var option=$('<option></option>');
option.attr('value',values[v][0]);
option.text(values[v][1]);
$('#myselect').append(option);
}
</script>
You can also try this out on http://jsfiddle.net/6HUHG/3/
If I added the TrustPilot html code directly on the HTML page, it works fine but I needed to insert it with jQuery. I see the HTML code when inserted but it's not displaying.
$(window).on('load', function () {
var el = $('#some-element');
el.html( trustPilotHtml() );
function trustPilotHtml() {
var str = "<div " +
"class='trustpilot-widget' " +
"data-locale='en-GB' " +
"data-template-id='123456' "+
"data-businessunit-id='123456' " +
"data-style-height='500px' " +
"data-style-width='100%' " +
"data-theme='light' " +
"data-stars='4,5' " +
"data-schema-type='Organization'>" +
"<a " +
"href='https://some-url.com' target='_blank'>Trustpilot</a> " +
"</div>";
return $(str);
}
});
Is the only way of getting the element to display properly is to directly inserted into the HTML without javascript?
No it's not the only way.
You should have a bootstrap script in your inside the HEAD part of your HTML (or close to it).
This script takes care of initializing all the widgets (TrustBoxes in Trustpilot lingo) that you have in your HTML.
Of cause that doesn't work if you are injecting the HTML dynmically, so it's also possible to call window.Trustpilot.loadFromElement(trustbox); yourself, when if you need to.
Here trustbox is a HTMLElement, you could get by using document.getElementById("some-element") or similar.
Reference: https://support.trustpilot.com/hc/articles/115011421468
The following worked for me on a product list page which returned filtered list via ajax
var element = document.getElementsByClassName("trustpilot-widget");
for(var i=0; i<element.length; i++) {
window.Trustpilot.loadFromElement(element[i]);
}
On the first page load all product reviews are displayed as expected, but if the page is updated via ajax call (using filters for example) the reviews are lost. Running the above code after ajax, reloads the reviews
Our application is been internationalized and being changed to different languages. For that reason we have to hard code all the messages. How can we do that for messages in javascript ?
This is how we are doing in html messages.
<span th:text="#{listTable.deletedFromTable}">deleted</span>
How do we hard code for javascript messages.(update the table)
$('#TableUpdate-notification').html('<div class="alert"><p>Update the Table.</p></div>');
You will need to put the messages in the DOM from the start, but without displaying them. Put these texts in span tags each with a unique id and the th:text attribute -- you could add them at the end of your document:
<span id="alertUpdateTable" th:text="#{listTable.updateTable}"
style="display:none">Update the Table.</span>
This will ensure that your internationalisation module will do its magic also on this element, and the text will be translated, even though it is not displayed.
Then at the moment you want to use that alert, get that hidden text and inject it where you need it:
$('#TableUpdate-notification').html(
'<div class="alert"><p>' + $('#alertUpdateTable').html() + '</p></div>');
You asked for another variant of this, where you currently have:
$successSpan.html(tableItemCount + " item was deleted from the table.", 2000);
You would then add this content again as a non-displayed span with a placeholder for the count:
<span id="alertTableItemDeleted" th:text="#{listTable.itemDeleted}"
style="display:none">{1} item(s) were deleted from the table.</span>
You should make sure that your translations also use the placeholder.
Then use it as follows, replacing the placeholder at run-time:
$successSpan.html($('#alertTableItemDeleted').html().replace('{1}', tableItemCount));
You could make a function to deal with the replacement of such placeholders:
function getMsg(id) {
var txt = $('#' + id).html();
for (var i = 1; i < arguments.length; i++) {
txt = txt.replace('{' + i + '}', arguments[i]);
}
return txt;
}
And then the two examples would be written as follows:
$('#TableUpdate-notification').html(
'<div class="alert"><p>' + getMsg('alertUpdateTable') + '</p></div>');
$successSpan.html(getMsg('alertTableItemDeleted', tableItemCount));
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.
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>");