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on print click how to open another page?

I have written following function to call another page when i will click print button. but when i click on print button it opens current page instead of the one which i want to call.
function printme(tripId, requestId, Ecommerce) {
//alert("print is called");
alert(tripId);
alert(requestId);
alert(Ecommerce);
window.location.href = "ViewTripConformationPrint.cshtml?";
window.print();
//workaround for Chrome bug - https://code.google.com/p/chromium/issues/detail?id=141633
if (window.stop) {
location.reload(); //triggering unload (e.g. reloading the page) makes the print dialog appear
window.stop(); //immediately stop reloading
}
return false;
}

The problem you're having is that the code after you set window.location.href is executed immediately. The page isn't loaded and then the code continues... you code continues until the end of the function and then window.location.href is actually loaded and processed. If you see what I mean.
You could try moving your code (window.print, if window.stop, etc) into ViewTripConformationPrint.cshtml (as part of onload).

How to keep the innerhtml content that is changed with the JS onclick function

this is a simple problem but cant seem to solve it.
I want to be able to change the innerhtml content of a link, once is triggered by an onclick function triggered from separate link that actually takes the user to another page (inside the website not external site), I get the script to work but the desirred innerhtml content to be changed dissapears once the page reloads and goes to the other page the link is pointing to. I actually want to keep the change of the text change even if the page is reloaded and taken elsewhere.
The script looks like something like this:
<script>
function myFunction() {
document.getElementById("testchange").innerHTML = "Get Started";
} //Js script that does the innerHMTL change
</script>
eng // button that triggers the onclick function but takes the user to another page inside the site
<a href="http://example.com" id="testchange" >Hello</a> // text to be changed by JS and want to keep the change even if the page is reloaded and taken elsewhere
So any ideas how i could do that? Thanx

For this to work you need some kind of storage. Let's try localStorage:
You first check if the changes has been made before setting the variable, then handle your event:
<script>
function ready(fn) {
if (document.readyState != 'loading'){
fn();
} else {
document.addEventListener('DOMContentLoaded', fn);
}
}
}
function myFunction() {
document.getElementById("testchange").innerHTML = "Get Started";
//this will save the state of the change
localStorage.setItem('textSet', true);
}
//this will change the text when the page is loaded if the change has been made before.
ready(function(){
if(localStorage.getItem('textSet')){
document.getElementById("testchange").innerHTML = "Get Started";
}
})
</script>

Either use Cookies or Session/Local storage, sessionStorage option below
Data stored in sessionStorage will lasts as long as the browser window is open, whereas localStorage has no expiration time
eng
<a href="http://example.com" id="testchange" >Hello</a>
<script>
function setFlag() {
sessionStorage.setItem('setFlag', 'true');
}
if (sessionStorage.getItem("setFlag"))
document.getElementById("testchange").innerHTML = "Get Started";
</script>
Note: this code will need to be place after your HTML elements ideally at bottom of the page

Why does window.onload ignore postback?

Consider the following js code (to click an asp.net Button on load):
function doSomething()
{
document.getElementById("<%= theButton.ClientID %>").click();
}
window.onload = doSomething;
When the page is loaded - the codebehind of the button is executed, and the page is loaded again (with new information). This should have introduced a bug of an infinite loop, but it doesn't. It is only called once, and ignored in the postback.
Why?

Assuming you want the doSomething method to be called only the first time the page loads:
You should add your call to doSomething to the page using Page.RegisterStartupScript in the code behind, but wrap it in an if statement that checks if it is a postback. That way, your method will only be called the first time the page loads:
if(!Page.IsPostBack)
{
Page.ClientScript.RegisterStartupScript(GetType(), "buttonClickScript" "window.onload = doSomething;", true);
}

jquery script to detect parameter in url and call a link with class

I have following scenario: User clicks on a link with parameter like this
www.abc.com/page1?xxx.
On page1 I would like to have script that detects parameter xxx and runs a link with a class asap (no need to wait for dom to finish, it can be in background)(running a link opens modal window with some text). I use jquery 1.8.
Edit: I am using following code: based on this question Conditionally open popup video based on URL query string
(function($){
Drupal.behaviors.zzz = {
attach: function (context) {
$(document).ready(function(){
function getURLParameter(name) {
return decodeURI(
(RegExp(name + '=' + '(.+?)(&|$)').exec(location.search)||[,null])[1]
);
}
if(getURLParameter('param')==1){
$(".colorbox-node").trigger('click');
}
});
}
};
})(jQuery);
However, there seems to be some loop jquery that prevents the page to finish loading. I suppose that is caused by colorbox plugin trying to set top value and looking at the console I can see "setting top" message constantly working until browser crashes. How to avoid this? Thank you

This might be a start to your question.
You can get the parameter from document.location.search. If you have multiple parameters, you might need to apply a regular expression to it.
var loc = document.location.search;
You can then open your new window
window.open(loc);
JQuery UI would be helpful in constructing a modal popup.

Call JavaScript Function On Call Behind of Javascript before redirecting to another page

I have Javascript function which i need to call at code behind in vb.net. The Main problem is it is not called properly because there is redirection to next page before this function executes. I do not want to call this function on Onclick event of button or something like that i want to call it after some specific condition in code behind. I have already tried following solutions please let me know if you have some other suggestions.
System.Web.UI.ScriptManager.RegisterClientScriptBlock(Page, Me.GetType(), "Script", "ShowEntryPermForm();", True)
Page.ClientScript.RegisterStartupScript(Me.GetType(), "Window", "ShowEntryPermForm();", True)
Problem Description: added from comment
The scenario is that in javascript function i have checked various conditions related to the project and it open up a pop up window where user enter his or her comments.
It is not necessary every time the function will open the pop up window. But by default the page redirects to new page as both the functions Javascript and redirection to another window are run on click event of the button.
But now my requirement is changed now i have to call the function from code behind in particular condition. Hope you get it now

You can do this in following way.
window.onbeforeunload = function()
{
//your code goes here
return "";
}
If you return anything here then browser will display and ask user whether to leave the page. In your case you don't need to return anything but runs the code.

The only way is to Separate the code and javascript in the way they will not rely on each other
for example you make an hidden asp:button with the rest of server side code
server side :
if(...) then
page.ClientScript.RegisterStartupScript(Me.GetType(), "Window", "ShowEntryPermForm();", True)
else
page.ClientScript.RegisterStartupScript(Me.GetType(), "Window", "otherfunction();", True)
end if
sub IDServersideHiddenbutton(obj as object ,e as eventargs)handles IDServersideHiddenbutton.click
rest of the server side code including the redirect
end sub
client side :
javascript ShowEntryPermForm()
{
// javascript code
$("#IDServersideHiddenbutton").click();
}
javascript otherfunction()
{
//just the click
$("#IDServersideHiddenbutton").click();
}
I really don't know your code structure but You can manipulate it to work with this idea