How can i submit a form in PDF by using Javascript? - javascript

Is it possible to reference a Form or a Button on a PDF using Javascript?
What I am trying to do is to write Javascript code that will submit a form, or if not that, click a Button of my choice that submits the form.
The problem I have here is that I don't know how to reference the button or the form in Javascript.
So is there a way to achieve this?

In Acrobat JavaScript, you can not execute "click a button" as an action.
Instead you execute whatever the MouseUp event of that button has assigned. If it is a function, execute the function, if it is some lines of JavaScript code, execute those lines.
In any case, you will need a trigger event. When you have specified it, the rest is straightforward.
I also strongly recommend to have a good look at the Acrobat JavaScript documentation.

Related

Can I check if a button was pressed in node.js?

I'm trying to check if a button was pressed and then open a new html file, I'm using express.js app.get method to open all of my HTML files. So my question is how can I open a HTML file on the same window when I press a button?
You could but shouldnt. NodeJS is backend.
Also note, that NodeJS is no JavaScript as normally referred to.
It is written/programmed in JavaScript.
To do something on click you would need either a normal <a> tag if you just want to open a link or you use client-side JavaScript with an onlick handler to execute something after a user clicked on an element.
You can accomplish this using javascript embedded into the html like this:
<button onclick="window.location='http://google.com'">Click me</button>
you can also try window.open=url
please note that this isn't really using node, just javascript. this type of behavior belongs in the page.
I think this thread would help you :)
https://stackoverflow.com/a/33703429/4578393
it uses if statements to check if the button has been pressed
if(req.body.hasOwnProperty("butt1")){
console.log("butt1 clicked");
Taine

Autoclick a form input?

I am trying to create an adhoc code that save me pressing a repetitive button on a webpage, I opened F12 developer and tried using getElementbyID(..).click(); however didn't quite work, this is part extract of the button, I wonder if someone can advise what code I can use to automatically submit the button? Any help will be greatly appreicated. Best regards, Jon
what code I can use to automatically submit the button
If this is for a regular form post without AJAX then you can select the form then use submit().
E.g.
/*
* The variable myform is previously determined such as by `document.forms[0]`
* or a similar DOM selector method
*/
myform.submit();
If this is for a non-form button then use the click() method as suggested in the comments above. However, be aware that for this method there would have to be an Event Listener attached for the button to do anything of value.

Stop form from submitting without javascript

The problem is quite simple to understand but quite hard to execute. I am currently facing some clients that turn off their browser Javascript by default and this screw up my website a bit. Since my website send ajax requests on form submit, stop the form submit using Javascript, turning JS off means the form will be sent through and that's unexpectedly.
What I am trying to ask and achieve is whether it is possible to just using html purely to stop a form from submitting?
I think the best answer is; to have the original form action point to an error page, asking the user to turn on javascript.
Then let your javascript code fill in the form action parameter, once the ajax state is complete.
Alternatively or additionally, you could use a <noscript> tag as suggested in the comments, to generate a message on the original page.
I think you can simply change your submit button tag to an input and style it to look like a button and remove the type="submit" that's all. with out ajax it will not respond.

How can I use OnKeyUp to trigger a javascript over and over?

First time asking a question here so please be gentle... I use a set of perl script (no judging please) that are great for simple flat file database creation, updating and searching (www.ezscripting.com/csv). I have used these scripts well beyond the intended uses including being able to display data using a javascript to call the data.
What I'd like to do is have a form field that searches a specific field in the database, let's say . What I'd like to do is allow a visitor to start to type in the search field and have the OnKeyUp event handler trigger a javascript call that will pull up to 5 entries in my database.
Is there a way to have OnKeyUp in an input field tag trigger an embedded javascript each time a new letter is typed?
There's an example here
that uses AJAX to do what I think you're trying to do.

about html input tag

I know almost nothing about html and javascript. So pardon me if this is a silly question.
For a html input tag like this:
<input name="search1$btnSearch" id="search1_btnSearch" style="background-color: white;" type="submit" value="search"/>
What's gonna happen when this button is clicked?
I looked in all the .js files that are referenced by the page that contains this input tag, but I did not find any code that responds to it.
So how can I locate the code that responds to this button's click event?
By the way, I think the web site that contains this input tag is built with asp.net, because the pages have a .asxp extension.
Thanks.
This will likely submit a form to search something on the site.
Check the form tag in the html to see what file is referenced.
<form action="form_action.asp">
The action references the file.
It is used to submit a form created with the help of form tags and input elements.
What's gonna happen when this button is clicked?
Since it is a submit button, in the absence of any JS that overrides the normal functionality, it will submit the form.
I looked in all the .js files that are referenced by the page that contains this input tag, but I did not find any code that responds to it.
There might still be some.
So how can I locate the code that responds to this button's click event?
If it exists, it will likely show up if you turn on profiling in your JS debugger (make sure it is configured not to reset when you leave the page (which submitting the form will do)).
It submits the form it is in. This is HTML default and doesn't need Javascript.
Without being able to see the .js files associated with the code it is impossible to tell. But there are a few possibilities.
There is no JS attached and it simply submits the form to the server for processing.
There is JS attached to the input element itself, in which case you would look for code like $('#search1_btnSearch').click(function(){...
There is JS attached to the onsubmit event of the form itself, in which case you would just look for submit event handlers.
You can dig deeper into this code yourself by downloading the Firebug plugin for Firefox which allows you to easily browse and manipulate HTML, JS, CSS, and more.
Most probably (IF THERE IS ANY javascript) the JS event is binded to "search1_btnSearch". Use ctrl + f and search for "search1_btnSearch".
BTW: Why do you think that there is javascript involved ? what happens?
The standard behaviour without javascript is to submit the form, in which this submit button is embedded.
Nothing as far as I see
May be it is attached with a form that has some action defined and a method also. So that will decide about the action.

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