Develop Reference

Page is refreshing on JSON request

I am trying to build a page that would allow a user to input text into a text field and hit enter on their keyboard and it would return the top 10 Wikipedia entries with that text.
Currently, my concern is that the page refreshes every time it fetches the JSON. I attempted the e.preventDefault() method, as I read about on other questions, but it isn't working. Can someone help me understand why this auto-refresh is happening, and how to fix it? Thank you.
Here is my HTML:
<div class="container-fluid">
<form action="#">
<input id="search" name="query" onkeyup="" type="text"></input>
</form>
</div>
<div class="main"></div>
</div>
And here is my Javascript:
$(document).ready(function() {
$("#search").on("keyup", function(e) {
// attempt to prevent page refresh
e.preventDefault();
// if key pressed is "enter"
if (e.keyCode == 13) {
// retrieve user input
var search = document.getElementById("search").value;
// build Wikipedia API url
var request = "https://en.wikipedia.org/w/api.php?action=query&list=search&srsearch=" + search + "&format=json&callback=?";
$.getJSON(request, function(json) {
var x = json.query.search[0]["snippet"];
$(".main").html(x);
});
};
});
});
Here's a link: https://codepen.io/lieberscott/pen/RLVaGE

Because you submit the form (pressing enter does that). The form submits to the current page which looks like a reload.
<form id="searchform>
<input id="search" name="query" onkeyup="" type="text"></input>
</form>
$('#searchform').on('submit', function(e){
e.preventDefault();
// your magic here.
});
The preventDefault stops the key UP, but by that time, you've already started submitting. The poreventDefault stops the enter getting input as text (you can check this with a textarea). If you'd change it to a letter, say A, you'd type the A, but not see it.
You can also remove the form itself, keeping just the input, if that doesnt create other issues, resulting in less HTML, which is nice.

Remove <form> tag from your HTML.

You are using a form and on enter/return it will try to submit the form.
Unless there is a button type="submit" or input type='submit' remove the form and use only input
<div class="container-fluid">
<input id="search" name="query" onkeyup="" type="text"></input>
</div>
<div class="main"></div>
</div>

How can I make a search part for wordpress site?

I have a wordpress site which I want to make a search utility for it in menu.
I know if we put this to browser :
www.yoursite.com?s=keyword
It searches all posts for keyword in their title.
But I don't how to make the form and use Javascript to handle that.
Any ideas wil be helpful
What I have tried in header.php :
<script>$(document).ready(function(){
function search(){
var uri = $("#searchtxt").val();
window.location.href="www.codepro.gq?s="+uri;
return;
}
})
</script>
In menu part :
<form class="navbar-form navbar-left">
<div>
<input type="text" id="searchtxt" placeholder="Search" />
</div>
<button onclick="search()">Search</button>
</form>

I don't use jQuery (I am an amateur)
I did it only with Javascript, edit it as you want.
Here's the Javascript & Form Code, I changed the url to "http", I don't know but there was a problem when I used "www" with the url
function search(){
var uri = document.getElementById("searchtxt");
window.location.href = "http://www.codepro.gq?s="+uri.value;
return;
}
<form class="navbar-form navbar-left">
<div>
<input type="text" id="searchtxt" placeholder="Search" />
</div>
<input type="button" value="Search" onClick="search()"/>
I changed the <button> tag to <input> tag as different browsers use different default types for the <button> element.

javascript redirect isnt working

I have a form that takes a users input and redirects to a the window to a URL with their input appended to the end.
Here is my HTML
<form id="wikiForm">
<label id="sideBarLabel">VoIP Services
<input type="text" placeholder="Search Wiki: e.g. E911" name="queryString" id="query-string" />
</label>
<input type="submit" value="Search" onclick="searchWiki();" />
</form>
The javascript it runs
function searchWiki() {
alert("Form Works!");
var siteQuery = $('#query-string').val();
window.location.href = "http://wiki.voipinnovations.com/dosearchsite.action?queryString=" + siteQuery;
alert("SECOND MESSAGE");
}
The issue is that it does not redirect. It only appends the 'siteQuery' variable to the end of the current URL. I know its calling the javascript because I see both alerts. I'm not sure what I'm doing wrong here.

There reason is because you using type="submit", which submits and sends an GET header to the default action parameter (current page).
Change the type="submit" to type="button".
<form id="wikiForm">
<label id="sideBarLabel">VoIP Services
<input type="text" placeholder="Search Wiki: e.g. E911" name="queryString" id="query-string" />
</label>
<input type="button" value="Search" onclick="searchWiki();" />
</form>
<script type="text/javascript" src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
<script>
function searchWiki() {
alert("Form Works!");
var siteQuery = $('#query-string').val();
alert(siteQuery);
window.location.assign("http://wiki.voipinnovations.com/dosearchsite.action?queryString=" + siteQuery);
alert("SECOND MESSAGE");
}
</script>
I tried the code with type="submit" and it's alerting, but not redirecting, because the submit is prioritized before the window.location change, thats the reason it just appends a ?queryString=value to the current url.
If you change the type like showed in the code above, it's working perfectly.

The issue is due to the fact that you're actually submitting your form, and the redirection is lost as the form submission occurs first. There are two easy ways to fix this:
Change the type of the input from submit to button, OR
Stop the submission of the form by returning false from your function and changing the call of the function to onclick="return searchWiki();"
jsFiddle example (1)
jsFiddle example (2)

Can't you just use assign?
window.location.assign("http://wiki.voipinnovations.com/dosearchsite.action?queryString=" + siteQuery);
Check out: http://www.w3schools.com/js/js_window_location.asp

Use default action and method attributes instead
The HTML form element provides the mechanism for doing this out of the box.
<form id="wikiForm" action="http://wiki.voipinnovations.com/dosearchsite.action" method="GET">
<label id="sideBarLabel">VoIP Services
<input type="text" placeholder="Search Wiki: e.g. E911" name="queryString" id="query-string" />
</label>
<input type="submit" value="Search" />
</form>
But, if you must use javascript, make this change:
From:
window.location.href = "…";
To:
window.location.assign("…"); // or
window.location = "…"
This is because location.href is a read-only property and location.assign() is the proper method for setting the new location to be loaded. You may also directly assign a string to the location object:
Whenever a new value is assigned to the location object, a document
will be loaded using the URL as if location.assign() had been called
with the modified URL.
Source: MDN

Change input type=submit to type=button
http://plnkr.co/edit/w4U7Sbm3XSKN8j3zUFMe?p=preview
<form id="wikiForm">
<label id="sideBarLabel">VoIP Services
<input type="text" placeholder="Search Wiki: e.g. E911" name="queryString" id="query-string" />
</label>
<input type="button" value="Search" onclick="searchWiki();" />
</form>

Trigger autocomplete without submitting a form

I am writing a very simple web app with three text inputs. The inputs are used to generate a result, but all the work is done in Javascript, so there is no need to submit a form. I'm trying to find a way to get the browser to store input values for autocomplete as it would if they were in a form that was submitted.
I have tried giving the inputs autocomplete="on" manually, but without a form to submit, the browser has no way of knowing when it should store the values, so this has no effect.
I have also tried wrapping the inputs in a form that has onSubmit="return false;", but preventing the form from actually submitting appears to also prevent the browser from storing its inputs' values.
It is of course possible to manually use localStorage or a cookie to persist inputs and then generate autocomplete hints from those, but I'm hoping to find a solution that taps into native browser behavior instead of duplicating it by hand.

Tested with Chrome, IE and Firefox:
<iframe id="remember" name="remember" class="hidden" src="/content/blank"></iframe>
<form target="remember" method="post" action="/content/blank">
<fieldset>
<label for="username">Username</label>
<input type="text" name="username" id="username" value="">
<label for="password">Password</label>
<input type="password" name="password" id="password" value="">
</fieldset>
<button type="submit" class="hidden"></button>
</form>
In your Javascript trigger the submit, e.g. $("form").submit(); $("#submit_button").click() (updated from comments)
You need to return an empty page at /content/blank for get & post (about:blank didn't work for me but YMMV).

We know that the browser saves its information only when the form is submitted, which means that we can't cancel it with return false or e.preventDefault()
What we can do is make it submit the data to nowhere without reloading a page. We can do that with an iframe
<iframe name="💾" style="display:none" src="about:blank"></iframe>
<form target="💾" action="about:blank">
<input name="user">
<input name="password" type="password">
<input value="Login" type="submit">
</form>
Demo on JSfiddle (tested in IE9, Firefox, Chrome)
Pros over the currently accepted answer:
shorter code;
no jQuery;
no server-side page loaded;
no additional javascript;
no additional classes necessary.
There is no additional javascript. You normally attach an handler to the submit event of the form to send the XHR and don't cancel it.
Javascript example
// for modern browsers with window.fetch
document.forms[0].addEventListener('submit', function (event) {
fetch('login.php', {
method: 'post',
body: new FormData(event.target))
}).then(r => r.text()).then(() => { /* login completed */ })
// no return false!!
});
No-javascript support
Ideally, you should let the form work without javascript too, so remove the target and set the action to a page that will receive your form data.
<form action="login.php">
And then simply add it via javascript when you add the submit event:
formElement.target = '💾';
formElement.action = 'about:blank';

I haven't tested this, but it might work if you submit the form to a hidden iframe (so that the form is actually submitted but the current page is not reloaded).
<iframe name="my_iframe" src="about:blank"></iframe>
<form target="my_iframe" action="about:blank" method="get">...</form>

---WITHOUT IFRAME---
Instead of using iframe, you can use action="javascript:void(0)", this way it doesn't go to another page and autocomplete will store the values.
<form action="javascript:void(0)">
<input type="text" name="firstName" />
<button type="submit">Submit</button>
</form>

Maybe you can use this Twitter Typeahead...is a very complete implementation of a autocomplete, with local and remote prefetch, and this make use of localStorage to persist results and also it show a hint in the input element...the code is easy to understand and if you don't want to use the complete jquery plugin, I think you can take a look of the code to see how to achieve what you want...

You can use jQuery to persist autocomplete data in the localstorage when focusout and when focusin it autocompletes to the value persisted.
i.e.
$(function(){
$('#txtElement').on('focusout',function(){
$(this).data('fldName',$(this).val());
}
$('#txtElement').on('focusin',function(){
$(this).val($(this).data('fldName'));
}
}
You can also bind persistence logic on other events also depending on the your application requirement.

For those who would rather not change their existing form functionality, you can use a second form to receive copies of all the form values and then submit to a blank page before your main form submits. Here is a fully testable HTML document using JQuery Mobile demonstrating the solution.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile.structure-1.4.5.min.css" />
<script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
<script src="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script>
</head>
<body>
<form method="post">
<input type="text" name="email" />
<input type="submit" value="GO" onclick="save_autofill(this);" />
</form>
<script>
function save_autofill(o) {
$(':input[name]', $('#hidden_form')).val(function () {
return $(':input[name=' + this.name + ']', $(o.form)).val();
});
$('#hidden_form').find("input[type=submit]").click();
}
</script>
<iframe name="hidden_iframe" style="display:none"></iframe>
<form target="hidden_iframe" id="hidden_form" action="about:blank" style="display:none">
<input type="text" name="email" />
<input type="submit" />
</form>
</body>
</html>
The save_autofill function just needs to be called on your main form submit button. If you have a scripted function that submits your form, place that call after the save_autofill call. You must have a named textbox in your hidden_form for each one in your main form.
If your site uses SSL, then you must change the URL for about:blank with https://about:blank.

From what i searched.. it seems you need to identify the names. Some standard names like 'name', 'email', 'phone', 'address' are automatically saved in most browser.
Well, the problem is, browsers handle these names differenetly. For example, here is chrome's regex:
first name: "first.*name|initials|fname|first$"
email: "e.?mail"
address (line 1): "address.*line|address1|addr1|street"
zipcode: "zip|postal|post.*code|pcode|^1z$"
But chrome also uses autocomplete, so you can customize the name and put an autocomplete type, but i believe this is not for custom fields..
Here is chrome's standard
And it's another thing in IE, Opera, and Mozilla. For now, you can try the iframe solution there, so you can submit it. (Maybe it's something semi-standard)
Well, that's all i can help.

Make sure you're submitting the form via POST. If you're submitting via ajax, do <form autocomplete="on" method="post">, omitting the action attribute.

you can use "." in both iframe src and form action.
<iframe id="remember" name="remember" style="display:none;" src="."></iframe>
<form target="remember" method="post" action=".">
<input type="text" id="path" size='110'>
<button type="submit" onclick="doyouthing();">your button</button>
</form>

Google search box only works 50% of the time

I'm writing a new tab extension for Firefox, and I'd like to have a box that you can type in and have it search Google. I really don't want to use a custom Google search, just because I feel like it's inconsistent and seems cheap.
All that it's supposed to do is add your query to the end of the google URL (in the correct formatting, of course) and redirect you to that page. I have it working sometimes, but not all of the time.
Here's the code I have:
JS:
var textstring;
//Gets the text from the form
function getQ() {
textstring = document.forms['Search'].elements[0].value;
}
//Does a Google Search
function googleSearch() {
window.location ="http://www.google.com/search?q="+textstring;
}
//main function to run everything
function main() {
getQ();
googleSearch();
}
HTML:
<form name="Search" >
<div id="test1">
<input type="text" name="q" size="31" maxlength="255" value="" />
</div>
<div id="test2">
<input type="button" value="Google Search" onclick="main();" />
</div>
</form>
Not sure why that last /form isn't showing up, but that's in there just so you guys know.
It works like 25% of the time. I can't figure out what's wrong with it. Could it just be that I'm testing it locally? I've been testing it in Firefox, but it seems to have the same issue in IE or Chrome, as well.

Why don't you just submit to google (and avoid all the javascript) ?
<form name="Search" method="get" action="http://www.google.com/search" >
and use a normal submit button like
<input type="submit" value="Google Search" />
Since you have named the input element q and the method of the form is get it will create the correct url.
example: http://jsfiddle.net/gaby/gxun9/