输入时jQuery自动完成重定向 [英] jQuery autocomplete Redirection upon enter
问题描述
我有一个完美无缺的自动完成功能，但我无法确定如何将用户重定向到一个单独的网页，其中包含按键盘上的ENTER选项信息。网站本身不一定存在，我只想知道网站已经存在的代码。
I have an Autocomplete that works perfectly but I'm having trouble figuring out how to re-direct the user to a separate web page containing info about his selection upon pressing ENTER on keyboard. The website itself doesn't have to exist, I just want to know the code for it assuming the website already exists.
index.php：
index.php:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Autocomplete using PHP/MySQL and jQuery</title>
<link rel="stylesheet" href="css/style.css" />
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/script.js"></script>
</head>
<body>
<div class="container">
<div class="header">
</div><!-- header -->
<h1 class="main_title">Autocomplete using PHP/MySQL and jQuery</h1>
<div class="content">
<form>
<p>Table consists of : ID, Location, Slug, Population </p>
<br><br>
<div class="label_div">Search for a Slug : </div>
<div class="input_container">
<input type="text" id="slug" onkeyup="autocomplet2()">
<ul id="list_id"></ul>
</div>
</form>
<br><br><br><br>
<p>List will be ordered from Highest population to lowest population (Top to bottom)</p>
<br><br>
</div><!-- content -->
<div class="footer">
Powered by Jason's Fingers</a>
</div><!-- footer -->
</div><!-- container -->
</body>
</html>
script.js：
script.js:
// autocomplete : this function will be executed every time we change the text
function autocomplet2() {
var min_length = 3; // min caracters to display the autocomplete
var keyword = $('#slug').val();
if (keyword.length >= min_length) {
$.ajax({
url: 'ajax_refresh.php',
type: 'POST',
data: {keyword:keyword},
success:function(data){
$('#list_id').show();
$('#list_id').html(data);
}
});
} else {
$('#list_id').hide();
}
}
// set_item : this function will be executed when we select an item
function set_item(item) {
// Changes input to the full name on selecting
$('#slug').val(item);
// Hides list after selection from list
$('#list_id').hide();
}
function change()
ajax_refresh.php：
ajax_refresh.php:
<?php
// PDO connect *********
function connect() {
return new PDO('mysql:host=localhost;dbname=wallettest', 'root', 'butthead', array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8"));
}
$pdo = connect();
$keyword = '%'.$_POST['keyword'].'%';
$sql = "SELECT * FROM population WHERE slug LIKE (:keyword) ORDER BY population DESC LIMIT 0, 10";
$query = $pdo->prepare($sql);
$query->bindParam(':keyword', $keyword, PDO::PARAM_STR);
$query->execute();
$list = $query->fetchAll();
foreach ($list as $rs) {
// put in bold the written text
$slug = str_replace($_POST['keyword'], '<b>'.$_POST['keyword'].'</b>', $rs['slug']);
// add new option
echo '<li onclick="set_item(\''.str_replace("'", "\'", $rs['slug']).'\')">'.$slug.'</li>';
}
?>
推荐答案
收听 keydown event，并通过检查键码来检查按下的键是否是回车键。
Listen for the keydown event, and check if the key pressed was the enter key, by checking the keycode.
input.on('keydown', function (ev) {
if (ev.keyCode === 13) { //enter's keycode is 13
//redirect code
}
});
你可能还需要做 ev.preventDefault（）如果输入键通常会做不需要的事情。
You might also have to do ev.preventDefault() if the enter key would normally do something unwanted.
这篇关于输入时jQuery自动完成重定向的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
