我正在创建像Google这样的搜索结果自动填充功能。
自动完成的结果(或来源)将是一个动态数组(该数组是使用从URL
调用中的$.ajax
属性访问的对象创建的)并且元素在每个keypress
事件。
我的意思很简单:
autocompleteResults
$.ajax
成功回调函数中,我们将此变量分配给空数组:autocompleteResults = []
在此之后,我们正在执行$.each()
功能:
$.each(d.query.pages, function(i) {
autocompleteResults.push(d.query.pages[i].title);
});
// d.query.pages - JSON object from the success callback (success: function(d) {...}
我们在成功回调结束时致电callback(autocompleteResults)
调用此函数并正确返回数组:
getAutocompleteResults(function() {
console.log(autocompleteResults);
});
然后在相同的范围内:
$("#search").autocomplete({source: autocompleteResults},...);
它仅适用于我第二次输入内容。
使用图片快速概述:
关于这个问题的所有研究成果:
如果未将自动填充放在keypress
事件函数中,则自动填充功能完美无缺。但是,在这种情况下,我们得到结果一次,然后它停止响应未来类型(输入“a” - 5个结果,输入“aa” - 结果与“a”相同,并且它没有响应。< / p>
我认为我应该使用所述here的$( ".selector" ).autocomplete( "search", "" );
来重新更改来源,但我不确定它是否可以解决此问题。
这些主题没有帮助: jQuery UI autocomplete with JSON, jQuery autocomplete with callback ajax json, Jquery Autocomplete Search with Ajax Request as sourcedata, https://forum.jquery.com/topic/autocomplete-with-ajax-and-json-not-working
要查看完整的项目代码,请访问: https://codepen.io/Kestis500/pen/PErONL?editors=0010
或者使用一小段代码(这样您就可以看到问题发生的最重要部分):
$(function() {
var autocompleteResults;
var changeText2 = function(e) {
var request = $("input").val() + String.fromCharCode(e.which);
$("#instant-search").text(request);
var getAutocompleteResults = function(callback) {
$.ajax({
url: "https://en.wikipedia.org/w/api.php?action=query&format=json&gsrlimit=5&generator=search&origin=*&gsrsearch=" + $('#instant-search').text(),
success: function(d) {
autocompleteResults = [];
$.each(d.query.pages, function(i) {
autocompleteResults.push(d.query.pages[i].title);
});
callback(autocompleteResults);
},
datatype: "json",
cache: false
});
};
getAutocompleteResults(function() {
console.log(autocompleteResults);
});
$("#search").autocomplete({
source: autocompleteResults,
response: function() {
if (
$("#instant-search")
.text()
) {
$("table").css("display", "table");
}
},
close: function() {
if (!$(".ui-autocomplete").is(":visible")) {
$(".ui-autocomplete").show();
}
},
appendTo: ".input",
focus: function(e) {
e.preventDefault();
},
delay: 0
});
};
var changeText1 = function(e) {
if (
/[-a-z0-90áãâäàéêëèíîïìóõôöòúûüùçñ!@#$%^&*()_+|~=`{}\[\]:";'<>?,.\s\/]+/gi.test(
String.fromCharCode(e.which)
)
) {
$("input").on("keypress", changeText2);
}
// THIS PART HAS NOTHING TO DO WITH THIS PROBLEM AND DELETING THIS WOULD MAKE A TABLE CREATED BY THE HTML TO NOT FUNCTION
var getInputSelection = function(input) {
var start = 0,
end = 0;
input.focus();
if (
typeof input.selectionStart == "number" &&
typeof input.selectionEnd == "number"
) {
start = input.selectionStart;
end = input.selectionEnd;
} else if (document.selection && document.selection.createRange) {
var range = document.selection.createRange();
if (range) {
var inputRange = input.createTextRange();
var workingRange = inputRange.duplicate();
var bookmark = range.getBookmark();
inputRange.moveToBookmark(bookmark);
workingRange.setEndPoint("EndToEnd", inputRange);
end = workingRange.text.length;
workingRange.setEndPoint("EndToStart", inputRange);
start = workingRange.text.length;
}
}
return {
start: start,
end: end,
length: end - start
};
};
switch (e.key) {
case "Backspace":
case "Delete":
e = e || window.event;
var keyCode = e.keyCode;
var deleteKey = keyCode == 46;
var sel, deletedText, val;
val = this.value;
sel = getInputSelection(this);
if (sel.length) {
// 0 kai paprastai trini po viena o 1 ar daugiau kai select su pele trini
$("#instant-search").text(
val.substr(0, sel.start) + val.substr(sel.end)
);
} else {
$("#instant-search").text(
val.substr(0, deleteKey ? sel.start : sel.start - 1) +
val.substr(deleteKey ? sel.end + 1 : sel.end)
);
}
break;
case "Enter":
if (
$("#instant-search")
.text()
.trim()
) {
console.log("Redirecting...");
}
break;
}
if (!$("#instant-search")
.text()
.trim()
) {
$("table, .ui-autocomplete").hide();
}
};
$("input").on("keydown", changeText1);
$("input").on("input", function(e) {
$("#instant-search").text($("#search").val());
if (
$("#instant-search")
.text()
.trim()
) {
$('table').css('display', 'table');
} else {
$("table").hide();
}
});
});
html,
body {
height: 100%;
width: 100%;
}
body {
margin: 0;
padding: 0;
font-family: sans-serif;
background-color: #000428;
/* fallback for old browsers */
background-image: -webkit-linear-gradient(to right, #004e92, #000428);
/* Chrome 10-25, Safari 5.1-6 */
background-image: linear-gradient(to right, #004e92, #000428);
/* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}
.v-container {
display: table;
height: 100%;
width: 100%;
}
.v-content {
display: table-cell;
vertical-align: middle;
}
.text-center {
text-align: center;
}
h1 {
color: #fff;
}
.input {
overflow: hidden;
white-space: nowrap;
}
.input input#search {
width: calc(100% - 30px);
height: 50px;
border: none;
font-size: 10pt;
float: left;
color: #4f5b66;
padding: 0 15px;
outline: none;
}
.input button.icon {
border: none;
height: 50px;
width: 50px;
color: #4f5b66;
background-color: #fff;
border-left: 1px solid #ddd;
margin-left: -50px;
outline: none;
cursor: pointer;
display: none;
-webkit-transition: background-color .5s;
transition: background-color .5s;
}
.input button.icon:hover {
background-color: #eee;
}
.ui-autocomplete {
list-style: none;
background-color: #fff;
-webkit-user-select: none;
user-select: none;
padding: 0;
margin: 0;
width: 100% !important;
top: auto !important;
display: table;
table-layout: fixed;
}
.ui-helper-hidden-accessible {
display: none;
}
.autocomplete-first-field {
width: 15%;
display: inline-block;
}
.autocomplete-second-field {
width: 85%;
display: inline-block;
text-align: left;
vertical-align: middle;
}
.three-dots {
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
table {
width: 100%;
border-spacing: 0;
border-collapse: collapse;
display: none;
table-layout: fixed;
}
table tr {
background-color: #fff;
-webkit-user-select: none;
user-select: none;
}
tr:first-child {
background-color: #ffc800;
color: #fff;
}
table td,
.ui-menu-item-wrapper {
padding: 10px 0;
}
td:nth-child(2) {
width: 85%;
text-align: left;
}
.ui-menu-item,
table {
cursor: pointer;
}
:focus {
outline: 0;
}
a {
text-decoration: none;
color: #fff;
position: relative;
}
#random-article {
margin-bottom: 5px;
}
.search-results {
background: #fff;
margin-top: 50px;
border-left: 0 solid;
cursor: pointer;
-webkit-transition: border-left .5s;
transition: border-left .5s;
}
.search-results h4,
.search-results p {
margin: 0;
padding: 10px;
}
.search-results:not(:first-child) {
margin-top: 25px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
<!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]-->
<!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]-->
<!--[if gt IE 8]><!-->
<html class="no-js">
<!--<![endif]-->
<div class="v-container">
<div class="v-content text-center">
<div id="random-article"><a href="https://en.wikipedia.org/wiki/Special:Random">Click here for a random WikiSearch article! :)</a></div>
<div class="input">
<input type="text" id="search" placeholder="Search...">
<button class="icon"><i class="fa fa-search"></i></button>
<table>
<tr>
<td class="fa fa-search">
<td id="instant-search" class="three-dots"></td>
</tr>
</table>
</div>
</div>
</div>
如果您有任何想法如何解决此问题,我们将非常感谢您的帮助:)
答案 0 :(得分:0)
您已将source: autocompleteResults,
保留在autocompleteResults动态更改的位置,您应该做这样的事情
source: function (request, response) {
getAutocompleteResults(function(data){
response(data);
});
},