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Note:
The answers & comments below reflect the state of legacy browsers in 2009. Now you can actually set the value of the file input element dynamically/programatically using JavaScript in 2017.
See the answer in this question for details as well as a demo:How to set file input value programatically (i.e.: when drag-dropping files)?
I'm currently working on programmatically filling an HTML/CSS/jquery form on another website using JavaScript. I'm able to fill all textboxs and click necessary buttons easily,but I'm stuck trying to set the value of the file chooser. I'm aware JavaScript doesn't have permissions to set the value of a file chooser, and it appears I can't control the dialog that appears when the button is pressed.
Is there some other way I can automate this? Or is there a solution in JavaScript?
Thanks!
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A js generated code snippet from a third party places a fixed button on the top of the page and when the button is clicked it shows a modal of a form. I'd like to create a custom button to replace the look of the provided from the snippet but still call the form on the click event. Is that possible?
<script type="text/javascript" src="https://pluginInfoandIds"></script>
If the button has an id (I assume it has) you should be able to just override the stylesheet information with your own. Through js you should also be able to add/remove classes (provided your script runs after theirs).
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I would like to implement onto my website a drop down style menu of which also has a text input field to add your own option aside from the predefined provided options. I have an example of this via the images below;
Drop Down Example - Closed
Drop Down Example - Open
What is my best solution to achieve this result for my website?
Select2
Selectivity (formerly Select3)
fSelect (lightweight)
There's a jquery plugin called chosen by harvest that handles this well. It allows free form input on the dropdown, and many other options. It's docs are here: https://harvesthq.github.io/chosen/
Once it's installed you can use something like this to initialize it on your select box.
$(".chosen-select").chosen();
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Recently I decided to learn Javascript and have been trying to create a script that will put a border around empty elements before the form is submitted. Essentially I want the form to be live validation and notify the user before they click submit. Any help would be greatly appreciated.
There are very many plugins if you want to use jQuery as your title suggests:
http://www.jquerybyexample.net/2014/05/15-useful-jquery-validation-plugins.html
Just pick whatever you want :-)
Or if you want to use plain JS, just search "javascript form validation" on google, you'll find thousands of entries, e.g.
http://www.learn-javascript-tutorial.com/javascript-form-validation.cfm and http://www.tizag.com/javascriptT/javascriptform.php
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I want to have 6 input fields in a webpage. If the user presses a button the 6 fields expand to 7,8, 9, or 10 fields. The fields are editable and come with a preset value. With the input from the user (or the preset values) a final value is calculated via a formula.
Is it better to use a form for the fields or DIVs?
Should I use JavaScript or something else I am not thinking about yet?
Should I use AJAX when getting the values or is it not needed in this case?
I thought about using an excel like editor made with jQuery https://github.com/mleibman/SlickGrid/wiki/Examples but it seems overkill for my needs plus I would need to edit a lot of it since I want a simple display of the fields.
I would use a form as you're asking the users for their data to be input. This will also trigger the keyboard on mobile/tablet devices if you're also targeting those platforms.
Javascript is fine for this, unless you want to hide the formula you're using (as they will be able to see it if they view your source).
Do you need to use AJAX? Are the pre-populated values going to change that much? If not, then no, it's just adding extra work when you could just have an array of values.
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I frequently find myself opening up Web Inspector in Safari when registering on a website and then changing the password field to a text field so I can view the text entered and don't have those black dots that cover up the password.
Opening Web Inspector time and time again is bit of a hassle so I wondered if it wouldn't be possible to use a piece of JS code in my bookmark bar and when I click it, the javascript changes every form input field with type="password" to type="text"
Tried some things I found on the web, but they didn't really work…
try this
document.querySelector("[type=password]").setAttribute("type","text");