请求不了 JSON 是怎么回事
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="./css/base.css">
<link rel="stylesheet" href="./font/iconfont.css">
<title>dropDown</title>
<style>
.dropdown {
position: relative;
/* margin: 150px; */
}
.dropdown-toggle {
position: relative;
z-index: 2;
}
/* 下拉箭头 */
.dropdown-arrow {
display: inline-block;
/* text-align: center; */
vertical-align: text-top;
}
.dropdown-layer {
display: none;
overflow: hidden;
position: absolute;
z-index: 1;
}
.dropdown-left {
left: 0;
right: auto;
}
.dropdown-right {
right: 0;
left: auto;
}
/* menu dropdown */
.menu .dropdown-toggle {
display: block;
height: 100%;
padding: 0 16px 0 12px;
border-left: 1px solid #f3f5f7;
border-right: 1px solid #f3f5f7;
}
.menu .dropdown-arrow {
margin-left: 5px;
}
.menu .dropdown-layer {
/* top: 44px; */
top: 100%;
border: 1px solid #cdd0d4;
/* border-top: none; */
background-color: #fff;
}
.menu-item {
display: block;
height: 30px;
padding: 0 12px;
line-height: 30px;
white-space: nowrap;
color: #4d555d;
}
.menu-item:hover {
background-color: #f3f5f7;
}
/* css hover 实现显示隐藏 */
.menu-active .dropdown-toggle {
background-color: #fff;
border-color: #cdd0d4;
}
/* 下拉箭头效果 */
[class *="-active"] .dropdown-arrow {
-o-transform: rotate(180deg);
-ms-transform: rotate(180deg);
-moz-transform: rotate(180deg);
-webkit-transform: rotate(180deg);
transform: rotate(180deg);
}
.transition {
-o-transition: all 0.5s;
-ms-transition: all 0.5s;
-moz-transition: all 0.5s;
-webkit-transition: all 0.5s;
transition: all 0.3s;
}
/* .menu-active .dropdown-layer {
display: block;
} */
/* 显示隐藏效果 */
.fadeOut {
visibility: hidden !important;
opacity: 0 !important;
}
.slideUpDownCollapse {
height: 0 !important;
padding-top: 0 !important;
padding-bottom: 0 !important;
}
.slideLeftRightCollapse {
width: 0 !important;
padding-left: 0 !important;
padding-right: 0 !important;
}
</style>
</head>
<body>
<div class="menu dropdown fl" data-active="menu">
<a href="javascript:;" class="dropdown-toggle">我的慕淘<i
class="iconfont dropdown-arrow transition"></i></a>
<ul class="dropdown-layer dropdown-left">
<li><a href="###" class="menu-item">已买到宝贝</a></li>
<li><a href="###" class="menu-item">我的足迹</a></li>
</ul>
</div>
<button id="btn-show">点我显示</button id="btn-show">
<button id="btn-hide">点我隐藏</button>
<script src="./js/jquery.js"></script>
<script src="./js/transition.js"></script>
<script src="./js/showHide.js"></script>
<script src="./js/dropDown.js"></script>
<script>
$('.dropdown').on('dropdown-show', function (e) {
$.getJSON('./js/dropdown.json', function (data) {
console.log(data)
})
});
$('.dropdown').dropdown({
event: 'hover',
css3: true,
js: true,
animation: 'fade',
delay: 0,
active: 'menu'
});
$('#btn-show').on('click', function () {
$('.dropdown').dropdown('show');
});
$('#btn-hide').on('click', function () {
$('.dropdown').dropdown('hide');
});
</script>
</body>
</html>(function ($) {
'use strict';
// Constructor
function Dropdown($elem, options) {
this.$elem = $elem;
this.options = options;
this.$layer = this.$elem.find('.dropdown-layer');
this.activeClass = options.active + '-active';
this._init();
}
Dropdown.DEFAULTS = {
event: 'hover',
css3: true,
js: true,
animation: 'fade',
delay: 0,
active: 'dropdown'
};
Dropdown.prototype._init = function () {
var self = this;
this.$layer.showHide(this.options);
this.$layer.on('show shown hide hidden', function (e) {
self.$elem.trigger('dropdown-' + e.type)
});
if (this.options.event === 'click') {
this.$elem.on('click', function (e) {
self.show();
e.stopPropagation();
});
$(document).on('click', $.proxy(this.hide, this));
} else {
this.$elem.hover($.proxy(this.show, this), $.proxy(this.hide, this));
};
};
Dropdown.prototype.show = function () {
var self = this;
if (this.options.delay) {
this.timer = setTimeout(function () {
_show();
}, this.options.delay);
} else {
_show();
}
function _show() {
self.$elem.addClass(self.activeClass);
self.$layer.showHide('show');
}
};
Dropdown.prototype.hide = function () {
if (this.options.delay) {
clearTimeout(this.timer);
};
this.$elem.removeClass(this.activeClass);
this.$layer.showHide('hide');
};
$.fn.extend({
dropdown: function (option) {
return this.each(function () {
var $this = $(this),
dropdown = $this.data('dropdown'),
options = $.extend({}, Dropdown.DEFAULTS, $this.data(), typeof option === 'object' && Option);
if (!dropdown) {
$this.data('dropdown', dropdown = new Dropdown($this, options));
}
if (typeof dropdown[option] === 'function') {
dropdown[option]();
}
});
}
});
})(jQuery);[
{
"url": "###",
"name": "已买到宝贝"
},
{
"url": "###",
"name": "我的足迹"
},
{
"url": "###",
"name": "我的优惠券"
}
]报错
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4回答
同学你好，报错信息跨域问题，原因是json文件不允许本地访问，需要放在服务器下。
同学可以用前面学习过的wampserver服务器，将文件夹放在服务器下进行访问，json路径写的没有问题。
祝学习愉快！
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