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how to pass a value from parent JS to child window

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Jan 10.2010

Hi All,
I need to pass a value from parent JSP to child window / pop up window.

in pop up window, i have a textbox which has id as rs and name as remSeconds

from parent i need to pass the value calculated from a timer which is remainingTime..

childWindow.document.remseconds.value=remainingTIme
or
childWindow.document.getElementById(‘rs’).value=remainingTime.

please help me how to pass this value from parent to child as timer which needs to be update the timing count down in parent

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JavaScript

14 Comments(s) ↴

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@mityaJan 10.2010 — [CODE]windowname.document.getElementById('idOfField').value = 'text to insert';[/CODE]
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@blackpantherauthorJan 11.2010 — i have tried that also.. the problem is it says is null or undefined.. can anyone tell me what it really means and whats the difference in my case.

i have made the child window var a global variable and accessed it..

eg:

var childWindow;

function opwnWIndow(){

window.open().. code goes here}

function Timer(){

childWindow.document.getElementById('id').value=some variable;

}
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@criterion9Jan 11.2010 — <i>
</i>var childWindow;
function opwnWIndow(){
childWindow = window.open()... code goes here}
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@blackpantherauthorJan 11.2010 — done exactly the same. not working
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@blackpantherauthorJan 11.2010 — this works fine in IE but not in Firefox.. can anybody tell me why. its urgent

childWindow.document.getElementById('remSeconds').value = remainingTime;

it didnt work in FF, childWindow.document.getElementById('remSeconds') is null is the error in get in error console
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@FangJan 11.2010 — Is the ID unique? Does it reference a control element?
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@blackpantherauthorJan 11.2010 — this is in the child window....

<input type='text' name='remSeconds' id='remSeconds' size='2'>
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@FangJan 11.2010 — What are the arguments in window.open() ?
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@blackpantherauthorJan 11.2010 — var childWindow =null;

var timeoutpath = "timeout.html";

function openWindow() {

var options = 'width=350,height=150,left=350,top=250,resizable=no,scrollbars=no,menubar=no,status=no,toolbar=no,location=no,titlebar=no,personalbar=no,dialog=no';
childWindow = window.open(timeoutpath, "timeWindow", options);
}
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@FangJan 11.2010 — When and where is the statement executed?

[I]childWindow.document.getElementById('remSeconds').value = remainingTime;[/I]
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@blackpantherauthorJan 11.2010 — this open window is called from a parent script and it opens in sequence like

first i called the open window function

second i call the timer function in which it calculates the remainingTime and updates in the child window. my doubt is whether there is no sync like before the window gets open and all things are written, the remaining TIme is getting called.. lots of confusion
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@criterion9Jan 11.2010 — Is it possible that the DOM hasn't been loaded in the child window before you are trying to access it?
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@blackpantherauthorJan 12.2010 — hi guys,

the reference created for the childwindow is the problem in my case. so i didnt try to create a reference and put all the code related to the child window in the child window as a script.

so now there is no need of the reference for the child window.. so only i call open window from parent js.

atlast the issue is solved....

'

NOTE:getElementById is a mysterious problem in FireFox..

Thanks to all who came up with giving solution to me.. Hope to meet u all with a new problem?
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@AntraSep 17.2020 — Can you share code snippet how you figured to open child window
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