Retrieving information from an iframe using JavaScript

Question

Retrieving information from an iframe using JavaScript

I am working on a simple web page that includes an iframe. Within this iframe, there are three input fields that users need to fill in. I am looking for a way to retrieve the data entered by the user in each of these input fields using JavaScript.

Below is the JavaScript code snippet:

<script type="text/javascript"> var ticket = window.frames[0].document.getElementById('ticket').ticket; alert(ticket); </script>

Inside the iframe, I have the following input field:

<input type='text' name='ticket' id='ticket'...

Despite entering data into all 3 input fields and clicking 'ok', nothing seems to happen. I am now wondering how I can save the data entered in these input fields to a .txt file so that I can later retrieve this text using PHP and store it in a database.

javascript iframe input field

Answer 1

Answer №1

I'm not sure about the accessibility of iframes through the window.frames property. A potential alternative approach could be:

const frame = document.querySelectorAll("iframe")[0]
  , formData = new FormData(frame.contentDocument.forms[0]);
console.log("Success: data=" + formData.toString());

Dealing with storing form values in a database presents its own challenges. One possible solution might involve bypassing JavaScript and configuring the iframe's form to submit a POST request to your PHP handler for storage purposes.

Answer 2

I'm not sure about the accessibility of iframes through the window.frames property. A potential alternative approach could be:

const frame = document.querySelectorAll("iframe")[0]
  , formData = new FormData(frame.contentDocument.forms[0]);
console.log("Success: data=" + formData.toString());

Dealing with storing form values in a database presents its own challenges. One possible solution might involve bypassing JavaScript and configuring the iframe's form to submit a POST request to your PHP handler for storage purposes.

Answer 3

Answer №2

Spending a significant amount of time, I tried to solve the puzzle of exchanging data between text boxes in two Iframes that I authored. Despite much wasted effort and scouring the internet for solutions, the answer turned out to be surprisingly simple. It seems like everyone online is tackling much more complex challenges. For those seeking a straightforward solution!

In my setup, there is a main page with two Iframes (ID = ifr1 and ifr2). Each frame contains a text box (ID = tb1 in ifr1). To retrieve the contents of tb1 in iframe ifr2, all you need to do in JavaScript is:

parent.ifr1.tb1.value or

parent.ifr1.document.getElementByID(‘tb1’).value.

To modify the value, simply use:

parent.ifr1.tb1.value=”whatever”

or

parent.ifr1.document.getElementByID(‘tb1’).value=”whatever”

You can also access a variable from ifr1 in ifr2 by using:

parent.ifr1.var_in_ifr1 where var_in_ifr1 is defined in the script of ifr1

var var_in_ifr1=”whatever”

Answer 4

Spending a significant amount of time, I tried to solve the puzzle of exchanging data between text boxes in two Iframes that I authored. Despite much wasted effort and scouring the internet for solutions, the answer turned out to be surprisingly simple. It seems like everyone online is tackling much more complex challenges. For those seeking a straightforward solution!

In my setup, there is a main page with two Iframes (ID = ifr1 and ifr2). Each frame contains a text box (ID = tb1 in ifr1). To retrieve the contents of tb1 in iframe ifr2, all you need to do in JavaScript is:

parent.ifr1.tb1.value or

parent.ifr1.document.getElementByID(‘tb1’).value.

To modify the value, simply use:

parent.ifr1.tb1.value=”whatever”

or

parent.ifr1.document.getElementByID(‘tb1’).value=”whatever”

You can also access a variable from ifr1 in ifr2 by using:

parent.ifr1.var_in_ifr1 where var_in_ifr1 is defined in the script of ifr1

var var_in_ifr1=”whatever”

Retrieving information from an iframe using JavaScript

Answer №1

Answer №2

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