Question

我是jQuery的新手，3天之后，在问我在这里看到所有问题之前。我想使用来自json文件的数据来使用下拉列表填充导航栏，我能够完美地解析数据但是使用引导程序进行下拉，我正在动态地从jQuery添加类，但它们根本无法工作，请帮助。 / p>

继承我的index.html

    <html lang="en" xmlns="http://www.w3.org/1999/html">
<head>
    <title>JavaScipt AJAX</title>
    <link rel="stylesheet" type="text/css" href="bootstrap.min.css"/>
    <link rel="stylesheet" type="text/css" href="main.css"/>
</head>
<body>
<div class="navbar secondary-navbar" id="department-nav">
    <div class="navbar-inner" id="menu">

    </div>
</div>
<script src="jquery.min.js"></script>
<script src="script_menu.js"></script>
<script src="bootstrap.min.js"></script>
</body>
</html>

sript_menu.js

$( document ).ready(function() {
        $.getJSON( "data.json", function(data) {
                console.log( data );
                var menu_item = '<ul class="nav nav-departments nav-featured">';
                var output = '<ul class="nav-list">';
                $.each(data, function(key, val) {
                    if(val.warehouse_id=="1"){
                        if(val.name=="Produce" || val.name=="Bakery" || val.name=="Dairy & Eggs" || val.name=="Beverages" ) {
                            menu_item += '<li class="dropdown">';
                            menu_item += '<a class="navbar-link dropdown-toggle">' + val.name + '</a>';

                            output+= '<li>';
                            output+= '<h2>' + val.name + '</h2>';

                            menu_item += '<ul class="dropdown-menu">';
                            for(var i=0; i<val.aisles.length; i++) {
                                output+= '<p>' + val.aisles[i].name + '</p>';
                                menu_item += '<li>' + val.aisles[i].name + '</li>';
                            }
                            menu_item += '</ul>';
                            menu_item += '</li>';
                            output+= '</li>';
                        }

                    }
                });
                output+= '</ul>';
                menu_item+= '</ul>';

                $('#menu').html(menu_item);
                $('#update').html(output);
            });
});

继承我的data.json

[

{
    "display_name": "Beer, Wine & Spirits",
    "id": 148,
    "name": "Beer, Wine & Spirits",
    "rank_offset": 991,
    "sort_order": 9,
    "visible": true,
    "warehouse_id": 2,
    "aisles": [{
        "department_id": 148,
        "id": 979,
        "name": "Spirits",
        "rank_offset": 1,
        "visible": true
    }, {
        "department_id": 148,
        "id": 976,
        "name": "Beer",
        "rank_offset": 2,
        "visible": true
    }]
}, {
    "display_name": "Prepared Food",
    "id": 59,
    "name": "Prepared Food",
    "rank_offset": 990,
    "sort_order": 3,
    "visible": true,
    "warehouse_id": 2,
    "aisles": [{
        "department_id": 59,
        "id": 776,
        "name": "Tofu & Soy",
        "rank_offset": 45,
        "visible": true
    }, {
        "department_id": 59,
        "id": 465,
        "name": "Salads, Sushi & Wraps",
        "rank_offset": 10,
        "visible": true
    }, {
        "department_id": 59,
        "id": 466,
        "name": "Sides & Soups",
        "rank_offset": 40,
        "visible": true
    }, {
        "department_id": 59,
        "id": 468,
        "name": "Whole Meals",
        "rank_offset": 20,
        "visible": true
    }, {
        "department_id": 59,
        "id": 764,
        "name": "Fresh Pasta",
        "rank_offset": 35,
        "visible": true
    }, {
        "department_id": 59,
        "id": 770,
        "name": "Desserts",
        "rank_offset": 50,
        "visible": true
    }, {
        "department_id": 59,
        "id": 771,
        "name": "Fresh Pizza",
        "rank_offset": 30,
        "visible": true
    }]
}, {
    "display_name": "Grocery",
    "id": 57,
    "name": "Grocery",
    "rank_offset": 997,
    "sort_order": 5,
    "visible": true,
    "warehouse_id": 2,
    "aisles": [{
        "department_id": 57,
        "id": 443,
        "name": "Spices",
        "rank_offset": 100,
        "visible": true
    }, {
        "department_id": 57,
        "id": 444,
        "name": "Baking",
        "rank_offset": 100,
        "visible": true
    }, {
        "department_id": 57,
        "id": 445,
        "name": "Condiments",
        "rank_offset": 100,
        "visible": true
    }, {
        "department_id": 57,
        "id": 446,
        "name": "Peanut Butter & Jelly",
        "rank_offset": 100,
        "visible": true
    }, {
        "department_id": 57,
        "id": 447,
        "name": "Oil, Vinegar & Tuna",
        "rank_offset": 100,
        "visible": true
    }, {
        "department_id": 57,
        "id": 448,
        "name": "Oil & Olives",
        "rank_offset": 100,
        "visible": true
    }, {
        "department_id": 57,
        "id": 449,
        "name": "Canned & Jarred Vegetables",
        "rank_offset": 100,
        "visible": true
    }, {
        "department_id": 57,
        "id": 450,
        "name": "Tomato Sauce",
        "rank_offset": 100,
        "visible": true
    }, {
        "department_id": 57,
        "id": 451,
        "name": "Pasta",
        "rank_offset": 100,
        "visible": true
    }, {
        "department_id": 57,
        "id": 452,
        "name": "Grains, Rice & Dried Beans",
        "rank_offset": 100,
        "visible": true
    }, {
        "department_id": 57,
        "id": 453,
        "name": "Soup",
        "rank_offset": 100,
        "visible": true
    }]
}, {
    "display_name": "Personal & Home Care",
    "id": 56,
    "name": "Personal & Home Care",
    "rank_offset": 994,
    "sort_order": 6,
    "visible": true,
    "warehouse_id": 2,
    "aisles": [{
        "department_id": 56,
        "id": 435,
        "name": "Vitamins & Supplements",
        "rank_offset": 30,
        "visible": true
    }, {
        "department_id": 56,
        "id": 436,
        "name": "Paper Products",
        "rank_offset": 20,
        "visible": true
    }, {
        "department_id": 56,
        "id": 438,
        "name": "Pets!",
        "rank_offset": 40,
        "visible": true
    }, {
        "department_id": 56,
        "id": 437,
        "name": "Cleaning Products",
        "rank_offset": 10,
        "visible": true
    }, {
        "department_id": 56,
        "id": 778,
        "name": "Personal Care",
        "rank_offset": 28,
        "visible": true
    }, {
        "department_id": 56,
        "id": 779,
        "name": "Soap",
        "rank_offset": 25,
        "visible": true
    }]
}
]

谢谢你耐心等待。

Answer 1

在文档加载后，您无法仅使用类名初始化Bootstrap组件。向组件添加类名时，Bootstrap会在页面加载时初始化它们。如果您在页面加载后添加组件，则需要使用引导程序文档中列出的“通过JavaScript”初始化方法自行初始化它，即对于下拉列表，您需要触发$('.dropdown-toggle').dropdown()（{{3} }）

从jQuery AJAX动态创建bootstrap下拉列表不起作用

1 个答案: