Develop Reference

Submit text value into iframe input

I want to send a text value from the parent page to the iframe < input >. It's all on the same domain and folder.
Was trying this code:
function addNick(nick) {
var txt = parent.document.getElementById('input').value;
parent.document.getElementById('mess').value = 'to[' + nick + '] ' + txt;
parent.document.getElementById('mess').focus();
}
<iframe src="input.php" name="input" id="input" scrolling="auto"></iframe>
Text is triggered in mess.php to be submitted with link to the above iframe input.
name
which is printed in index.php with js
$(document).ready(function(){
setInterval(function(){//setInterval() method execute on every interval until called clearInterval()
$('#load_posts').load("mess.php").fadeIn("slow");
//load() method fetch data from mess.php page
}, 1000);
});
So basically the addNick code won't work.
Any help will be much appreciated.
FINAL SOLUTION
function addNick(nick) {
var iframe = document.getElementById('iframe');
//the element you want to target:
var mess = iframe.contentWindow.document.getElementById("mess").value += `${nick}, `;
}

So first get the iframe element by id, then target the element within the iframe..
so if input.php has an <h1></h1> tag this will set the innerHTML to what the parameter nick holds..
function addNick(nick) {
var iframe = document.getElementById('iframe');
//the element you want to target:
var mess = iframe.contentWindow.document.getElementsByTagName("H1")[0];
mess.innerHTML = `to ${nick}`
}
On how to access dom of iframe, check out this example:
https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_element_iframe

What Is The Best Way Of Writing Element in On Clicked blank page Created By JavaScript?

My Code:
$('.classname').on ("click" ,function() {
var newpage = "Html Elements for blank page";
var mywindows = window.open("","_blank","");
mywindows.document.open() ;
mywindows.document(newpage);
mywindows.document.close() ;
});
<button class="classname">Click here</button>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
I want to make it short By Using:
$('html').html('my html elements');
but I can't success to use this, It Always shows result in the current page, and opens a blank page, and I don't have any idea to fix it!
Here is the code:
$('.classname').on ("click" ,function() {
var newpage = window.open('','_blank','');
newpage.$('html').html('my html elements are here');
});

Document is not a function to use parameters in it.
Else you can not use open and close function with document.

How to get anchor text in a Session variable?

I am working on a project in which i have linked many pdf files in the master page.On clicking the anchor the page redirected to the specified page and displays pdf in iframe.Now i want the text in anchor tag to be displayed on the page where pdf is opened.
Consider I have an anchor which looks like this :
News Letter
Now i want the text " News letter" to be shown on the redirected page.
I think i could this by saving the text in session variable.But How can I save the anchor text in Session variable without specifying any id or class to the anchor tag? Can anyone help me please ?

You probably looking for QueryString instead of session, You are already passing path in QueryString, also pass the anchor text. You need to add this to url while you are creating the anchor tag.
News Letter
On server side
lblForAnchor.Text = Request.QueryString["aText"].ToString();
Edit you can not change the query string when it is created then you can change it when it is loaded in DOM in document.ready. Assign a class to your anchors to be specific.
$( 'a.someclass' ).attr( 'href', function(index, value) {
return value + '&aText=' + $(this).text();
});
Other way to do this on click of anchor.
$( 'a.someclass' ),click(function(event) {
window.location.href = this.href + '&aText=' + $(this).text();
});

You can try this
$("a").click(function (e) {
if($(this).attr("href").match(".pdf$"))
{
window.location.href = $(this).attr("href") + "&title=" + $(this).text();
e.preventDefault();
}
});
On server side in "Main_Content.aspx"
strTitle = Request.QueryString["title"];

You could Write the content dynamically with javascript:
News Letter
Javascript:
<script language="javascript">
function openWin(t,u) {
docstring='<iframe src='+u+'></iframe>';
win = window.open();
newdoc=win.document;
newdoc.writeln(t);
newdoc.write(docstring);
newdoc.close();
}
var elements = document.getElementsByTagName('a');
for(var i = 0, len = elements.length; i < len; i++) {
elements[i].onclick = function () {
var theAnchor = elements[i].innerHTML;
var theHref = elements[i].href;
if(theHref.match(/\.pdf/)){
openWin(theAnchor,theHref);
}
}
</script>
Or call a different address with URL and test as parameters and generate the doc on the server side.
I'm not sure how this will behave with the link click but it might be worth a shot.
links should not have to be modified.

javascript delete file on unlimited upload button

thanks for the upcoming assistance, I am working on a uploader and trying to add a javascript delete link to each extra input field. I have one that adds a child.
here is a codepen: http://codepen.io/anon/pen/NPPmYP
What I am wanting to do is during creation of the extra input fields, Here is my code if anyone is able to help.
I also tried these methods and they didnt work
<script language="javascript">
<!--
function _add_more() {
files.appendChild(document.createElement("br"));
var del = document.createTextNode("Delete ");
document.getElementById("files").appendChild(del);
var extra = document.createElement('input');
extra.type="file";
extra.id="images[]";
extra.name="images[]";
extra.size="50";
extra.accept="image/jpeg";
document.getElementById("files").appendChild(extra);
}
</script>
I tried changing what I have for that line into
var del = document.createTextNode('delete ');
But it just showed it as text instead of making it a clickable link, I am really unsure on how to create the function to remove a child without effecting any others. Thank you for the upcoming support

You'll need to attach an event handler to the click of the delete link.
Something like this. (Updated as per comment)
<script language="javascript">
function _add_more() {
var del = document.createElement("a");
del.appendChild(document.createTextNode("Delete"));
del.href="#"; // Apply link styling
var extra = document.createElement('input');
extra.type="file";
extra.id="images[]";
extra.name="images[]";
extra.size="50";
extra.accept="image/jpeg";
var additionalFile = document.createElement('span');
additionalFile.appendChild(document.createElement("br"));
additionalFile.appendChild(del);
additionalFile.appendChild(extra);
document.getElementById("files").appendChild(additionalFile);
del.addEventListener('click', function(event){
additionalFile.parentElement.removeChild(additionalFile);
event.preventDefault();
});
}
</script>

Is there a way to open all <a href> links on a page in new windows?

I have a bunch of <a href=".html"> links and want to make them all open in new windows.
I know I can do a search and replace all to add target="_blank" to all my <a href="..."> links.
However, is there a quick way, such as setting a CSS style, or adding some JavaScript code, to accomplish the same thing?

If you have a page consisting of only links, consider <base target="_blank">. This opens every link in a new window (but also includes the targets of forms, unless overridden with <form target="_self">.
As others have shown, without modifying the HTML source, you can use Javascript to iterate through all <a> tags and add the target attribute or add an event listener that sets the target attribute dynamically.

If you have jQuery it's simple
$("a").attr("target", "_blank");
Or regular Javascript
var links = document.links;
for (var i = 0; i < links.length; i++) {
links[i].target = "_blank";
}
As per #Lekensteyn's suggestion, without Javascript (added for Completeness)
<base target="_blank">.

CSS: No.
JavaScript: Delegate a click event, which adds a target="_blank" attribute on click of a link.
document.body.addEventListener(function(e) {
if (e.target.nodeName.toUpperCase() === 'A' && e.target.href) {
e.target.target = '_blank';
}
}, true);
Note: If the <a> element contains other elements, you might want to traverse the tree to find out whether an anchor element is clicked:
document.body.addEventListener(function(e) {
var target = e.target;
do {
if (target.nodeName.toUpperCase() === 'A' && target.href) {
target.target = '_blank';
break;
}
} while (target = target.parentElement);
}, true);
Or, if you're a jQuery-lover:
$('body').on('click', 'a', function(e) {
e.target.target = '_blank';
});

yep, u can add attribute with JS to all links in HTML document named 'target' with value '_blank' ;)
You could also open replace href's of all links from url to javascript:openInWindow(url) using this, and writing function in JS that opens new window and set's it's location to url ;) Google will help you with both.

Just add a html base element to the page using Javascript:
var e = document.createElement("base");
e.target = "_blank";
document.head.appendChild(e);

I've used pure vanilla JavaScript to create a script that makes all the links open in a new window.
<script type="text/javascript">
var all_links = document.querySelectorAll("a");
for (let index in all_links) {
try {
all_links[index].setAttribute("target", "_blank");
}
catch (error) {
//console.log(error);
}
}
</script>