我有一个工作小提琴,但自动完成功能不会在浏览器中显示任何内容。这里可以看到小提琴:Working Fiddle
在HTML中,我有一个输入元素用于测试目的:
<head>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.3.2/jquery.mobile-1.3.2.min.css" />
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="http://code.jquery.com/mobile/1.3.2/jquery.mobile-1.3.2.min.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<script type ="text/javascript" src="myScripts.js"></script>
<script type ="text/javascript" src="jquery.csv-0.71.js"></script>
<script type ="text/javascript" src="csvToArray.v2.1.js"></script>
</head>
<body>
<div data-role="page" id="main">
<div data-role="header">
<h1>Test</h1>
</div>
<div id="contentDiv" data-role="content">
<input type="text" id="food" placeholder="Type (First Name) Here" />
</div>
</div>
</body>
在我的javascript中,我通过从文件中读取文本来初始化json变量。我通过显示我的json变量的警报来测试我的初始化是否成功。我试图在我的自动完成中使用该json变量作为源。下面,我通过硬编码json变量的初始化来简化我的javascript,以缩小问题范围:
var jsonVersion =
[{"description":"mac and cheese", "servingSize":"1 cup", "calories":"500"},
{"description":"slice of pizza", "servingSize":"1 slice", "calories":"400"},
{"description":"oreo cookie", "servingSize":"1 cookie", "calories":"100"},
{"description":"salad", "servingSize":"1 cup", "calories":"50"},
{"description":"apple", "servingSize":"1 apple", "calories":"70"}];
$('#food').autocomplete({
source: jsonVersion,
select: function (event, ui) {
selectedObj = ui.item;
alert("selected object=" + selectedObj.value);
},
minLength: 1
});
知道为什么这会在小提琴中起作用而不是在浏览器中起作用?我没有得到任何浏览器错误。当我输入文本框时,几乎没有显示任何内容。
修改
也许这就是我填充jsonVersion的方式 - 虽然当我通过“alert”打印jsonVersion时,它看起来是正确的。任何有关我在这里做错的建议都将不胜感激。这是整个javascript文件。 “data”是一个数组数组,我循环遍历每个数组以创建一个对象,然后创建一个对象数组。然后我使用stringify将对象数组转换为json:
$(function ($) {
var jsonVersion;
var arrayOfObjects;
$.ajax({
type: "GET",
url: "test.js",
dataType: "text",
success: function(data) {
data = $.csv.toArrays(data);
arrayOfObjects = new Array();
for(var i=1; i<data.length; i++)//skipping over header
{
var foodObject = new Object();
foodObject.label = data[i][1];
foodObject.weight = data[i][2];
foodObject.servingSize = data[i][3];
foodObject.calories = data[i][4];
arrayOfObjects.push(foodObject);
}
jsonVersion = JSON.stringify(arrayOfObjects);
alert(jsonVersion);
}
});
$('#food').autocomplete({
source: jsonVersion,
select: function (event, ui) {
selectedObj = ui.item;
alert("selected object=" + selectedObj.value);
},
minLength: 1
});
})
答案 0 :(得分:1)
您有两个主要问题:
您正在将字符串传递给自动填充的source
选项。执行此操作时,窗口小部件会尝试将该字符串用作URL以从中检索结果。由于此字符串是您作为AJAX调用的结果而构建的数组的JSON表示,因此显然不会按照您期望的方式工作。您只需使用arrayOfObjects
代替。
您正在为AJAX请求的success
回调之外初始化自动完成小部件。这意味着自动完成小部件使用空源初始化。您只需将初始化移至success
回调即可解决。
修复这两件事应该可以解决您的问题:
$(function ($) {
$.ajax({
type: "GET",
url: "test.js",
dataType: "text",
success: function(data) {
data = $.csv.toArrays(data);
var arrayOfObjects = [];
for(var i=1; i<data.length; i++)//skipping over header
{
var foodObject = new Object();
foodObject.label = data[i][1];
foodObject.weight = data[i][2];
foodObject.servingSize = data[i][3];
foodObject.calories = data[i][4];
arrayOfObjects.push(foodObject);
}
$('#food').autocomplete({
source: arrayOfObjects,
select: function (event, ui) {
selectedObj = ui.item;
alert("selected object=" + selectedObj.value);
},
minLength: 1
});
}
});
});
答案 1 :(得分:0)
看起来你的脚本不在dom ready handler中。
在jsfiddle中,左侧面板中的第二个下拉列表onload
告诉应用程序为脚本添加包装上传处理程序 - 如果选择on head
它将无效fiddle
jQuery(function ($) {
var jsonObject = [{
"label": "mac and cheese",
"servingSize": "1 cup",
"calories": "500"
}, {
"label": "slice of pizza",
"servingSize": "1 slice",
"calories": "400"
}, {
"label": "oreo cookie",
"servingSize": "1 cookie",
"calories": "100"
}, {
"label": "salad",
"servingSize": "1 cup",
"calories": "50"
}, {
"label": "apple",
"servingSize": "1 apple",
"calories": "70"
}];
$('#food').autocomplete({
source: jsonObject,
select: function (event, ui) {
selectedObj = ui.item;
alert("selected object=" + selectedObj.value);
},
minLength: 1
});
})
演示:Fiddle
更新
$(function ($) {
var arrayOfObjects = [];
$.ajax({
type: "GET",
url: "test.js",
dataType: "text",
success: function (data) {
data = $.csv.toArrays(data);
for (var i = 1; i < data.length; i++) //skipping over header
{
var foodObject = new Object();
foodObject.label = data[i][1];
foodObject.weight = data[i][2];
foodObject.servingSize = data[i][3];
foodObject.calories = data[i][4];
arrayOfObjects.push(foodObject);
}
}
});
$('#food').autocomplete({
source: arrayOfObjects,
select: function (event, ui) {
selectedObj = ui.item;
alert("selected object=" + selectedObj.value);
},
minLength: 1
});
})