我会尽量保持简单。
我有一个通过AJAX提取的JSON
对象。我正在动态显示数据中 main div
的图标列表,可以打开或关闭。
我有一个 secondary div
,其中selected
项目正在显示,而 main div
图标则收到{{} 1}}。
我希望最终用户能够通过点击 active
或 main div
来删除其中的任何一个。< / p>
大多数情况都有效,但我无法找出将它们映射到一起的最佳方法,这样我就可以有两个独立的secondary div
来控制相同的结果。
我认为这可能与我动态创建元素的事实有关......这会创建更多元素......这些元素必须改变初始元素。
到目前为止,我的结构是映射click events
内的当前选择。这让我可以控制保留所选内容的基于代码的列表(比我将要提供的示例中的数据要多得多)。
所以,到目前为止我是这样的:
HTML:
array
的Javascript / jQuery的:
<div id="options"></div>
<div id="selectedOptions"></div>
因此,总而言之,我想要一些方法从 {{1}中的项目中删除 // Simple simulated AJAX data
var ourData = {
"color1": "yellow",
"color2": "blue"
};
var $options = $('#options');
var $selectedOptions = $('#selectedOptions');
// Array to keep track of which objects are selected
var selectedOptions = [];
// Makes the initial option dynamic list
makeOptions(ourData, $options);
// If an option from the main div is clicked, handle class changing
$('button').on('click', function(){
pickOption($(this));
});
/* This function is the problem. The option gets removed from the array, and from the secondary div, but the class of active still occurs on the main div. */
$selectedOptions.on('click', '.optionActive', function(){
var option = $(this).data('color');
var optionPosition = jQuery.inArray(option, selectedOptions);
selectedOptions.splice(optionPosition, 1);
displayOptions(selectedOptions, $selectedOptions);
});
// Creates initial icons (buttons in this case) to the DOM and applies a data-attribute for the color
function makeOptions(options, $container){
var $results = $('<div id="results">');
$.each(options, function(key, value){
var $optionButton = $('<button>' + key + ':' + value + '</button>');
$optionButton.data('color', value);
$results.append($optionButton);
});
$container.append($results);
}
/* Handler for selecting an option from the Main Div. Handling the class active.
I am not using a simple classToggle because there are many situations where a click is not allowed */
function pickOption($option){
var selectedOption = $option.data('color');
// If the option returns true, or that it doesn't exist yet
if(modifyOptions(selectedOption, selectedOptions)){
$option.addClass('active');
} else {
$option.removeClass('active');
}
// Recreate our current selected options
displayOptions(selectedOptions, $selectedOptions);
}
/* Searches array to see if the option exists. Returns true or false and either pushes or splices the option from the array */
function modifyOptions(option){
var optionPosition = jQuery.inArray(option, selectedOptions);
if(optionPosition == -1){
selectedOptions.push(option);
return true;
} else {
selectedOptions.splice(optionPosition, 1);
return false;
}
}
/* Displays all currently selected options that exist in our array */
function displayOptions(selectedOptions, $container){
$container.empty();
$.each(selectedOptions, function(option, value){
var $optionTile = $('<div class="optionActive">');
$optionTile.data('color', value)
.text(option + ":" + value)
.css('background', value);
$container.append($optionTile);
});
}
等效元素中的.active
类单击。
我尝试通过使用所选项目的main div
搜索任何元素来删除课程second div
,但我无法让它工作。
例如:
active
我真的想要一些data-color=data-color
方法,例如,如果它有$('*[data-color="' + $(this).data('color') + '"]').removeClass('active');
,则删除该类。
游乐场: https://jsfiddle.net/c75xcLha/
编辑:
答案 0 :(得分:2)
您使用data-* property
而不是.data(PROP)
分配attribute
,因此无法使用data-*
访问/选择具有attribute-selector
属性的元素,分配{{1}使用attribute
代替.attr('data-color')
Attribute Equals Selector [name=”value”]
,选择具有指定 属性 的元素,其值恰好等于某个值。
.data( key, value )
,存储与匹配元素相关联的任意数据。
使用
.data(property)
更新数据值时,它正在更新由.data()
管理的内部对象,因此不会在jQuery
[Ref]中更新
data-* attribute
// Simple simulated AJAX data
var ourData = {
"color1": "yellow",
"color2": "blue"
};
var $options = $('#options');
var $selectedOptions = $('#selectedOptions');
// Array to keep track of which objects are selected
var selectedOptions = [];
// Makes the initial option dynamic list
makeOptions(ourData, $options);
// If an option from the main div is clicked, handle class changing
$('button').on('click', function() {
pickOption($(this));
});
/* This function is the problem. The option gets removed from the array, and from the secondary div, but the class of active still occurs on the main div. */
$selectedOptions.on('click', '.optionActive', function() {
var option = $(this).data('color');
var optionPosition = jQuery.inArray(option, selectedOptions);
selectedOptions.splice(optionPosition, 1);
$('[data-color="' + $(this).data('color') + '"]').removeClass('active');
displayOptions(selectedOptions, $selectedOptions);
});
// Creates initial icons (buttons in this case) to the DOM and applies a data-attribute for the color
function makeOptions(options, $container) {
var $results = $('<div id="results">');
$.each(options, function(key, value) {
var $optionButton = $('<button>' + key + ':' + value + '</button>');
$optionButton.attr('data-color', value);
//___________^^^^^^^^^^^^^^^^^^Little trick here!
$results.append($optionButton);
});
$container.append($results);
}
/* Handler for selecting an option from the Main Div. Handling the class active.
I am not using a simple classToggle because there are many situations where a click is not allowed */
function pickOption($option) {
var selectedOption = $option.data('color');
// If the option returns true, or that it doesn't exist yet
if (modifyOptions(selectedOption, selectedOptions)) {
$option.addClass('active');
} else {
$option.removeClass('active');
}
// Recreate our current selected options
displayOptions(selectedOptions, $selectedOptions);
}
/* Searches array to see if the option exists. Returns true or false and either pushes or splices the option from the array */
function modifyOptions(option) {
var optionPosition = jQuery.inArray(option, selectedOptions);
if (optionPosition == -1) {
selectedOptions.push(option);
return true;
} else {
selectedOptions.splice(optionPosition, 1);
return false;
}
}
/* Displays all currently selected options that exist in our array */
function displayOptions(selectedOptions, $container) {
$container.empty();
$.each(selectedOptions, function(option, value) {
var $optionTile = $('<div class="optionActive">');
$optionTile.data('color', value)
.text(option + ":" + value)
.css('background', value);
$container.append($optionTile);
});
}
.active {
background: #CCF;
}
.optionActive {
min-width: 100px;
min-height: 100px;
display: inline-block;
margin: 1em;
background: #eee;
}
编辑: 如果您仍想坚持使用<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<div id="options"></div>
<div id="selectedOptions"></div>
方法,请使用.data
选择目标元素。
.filter