How To Pass Value To Pop Up Window Using Javascript Function?

I want to open new window from existing form.When I am clicking on new window in form then new form should open with results of value entered,but new window form is opening with ma

Solution 1:

Suppose your text field's id is myTextField, whatever you named it. if it has no id, set a id for it. then, in the popup window, you can use JavaScript parent.document.getElementById('myTextField').value to get the value of the textfield.

Solution 2:

Assign window.open() to a variable so you can access it's elements.

<form>
    <input type="textbox" id="txt" />
    <input type="button" id="btn" value="Open window" />
</form>

<script>
document.getElementById('btn').onclick = function(){
    var myWindow = window.open();
    myWindow.document.body.innerHTML = document.getElementById('txt').value;
};
</script>