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If I have an html document whose rough structure is
<html> <head> </head> <body class="bodyclass" id="bodyid"> <div class="headerstuff">..stuff...</div> <div class = "body"> <form action="http://example.com/login" id="login_form" method="post"> <div class="form_section">You can login here</div> <div class="form_section"> <input xmlns="http://www.w3.org/1999/xhtml" class="text" id="username" name="session[username_or_email]" tabindex="1" type="text" value="" /> </div> <div class="form_section">etc</div> <div xmlns="http://www.w3.org/1999/xhtml" class="buttons"> <button type="submit" class="" name="" id="go" tabindex="3">Go</button> <button type="submit" class="" name="cancel" id="cancel" tabindex="4">Cancel</button> </div> </form> </div> </body> </html> You can see that there is a username field and a Go button. How would I, using Javascript, fill in the username and press Go...?
I would prefer to use plain JS, rather than a library like jQuery.
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In javascript onclick event , you can use form. submit() method to submit form. You can perform submit action by, submit button, by clicking on hyperlink, button and image tag etc. You can also perform javascript form submission by form attributes like id, name, class, tag name as well.
To keep the values, you must fill in the values on the server while rendering the page. Usually, you can simply copy the data from the HTML request parameters into the fields. Usually, you cannot simply copy the HTML request parameters into the fields.
If you want to add content to a page you need to work with the DOM. Google "create div javascript" or "create span javascript" for examples, you basically need to create an element that has your text in it and add that element to the part of the page you want the text to display.
document.getElementById('username').value="moo" document.forms[0].submit() 
document.getElementById('username').value = 'foo'; document.getElementById('login_form').submit(); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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