Jquery 如何找到所选选项的所有数据道具
是否可以在“选择对象”中找到选定选项的所有属性,如数据名=、数据客户端=。我想制作一个数组/object/json,在数据属性中存储很少的信息Jquery 如何找到所选选项的所有数据道具,jquery,option,selected,Jquery,Option,Selected,是否可以在“选择对象”中找到选定选项的所有属性,如数据名=、数据客户端=。我想制作一个数组/object/json,在数据属性中存储很少的信息 <option data-category="<?= $product->category; ?>" data-color="<?= $product->color; ?>" data-price="<?= $p
<option
data-category="<?= $product->category; ?>"
data-color="<?= $product->color; ?>"
data-price="<?= $product->price; ?>"
data-priceclient="<?= $product->priceclient; ?>"
data-um="<?= $product->um; ?>"
data-x="<?= $product->x; ?>"
data-y="<?= $product->y; ?>"
data-z="<?= $product->z; ?>"
value="<?= $product->id; ?>" <?= $selected; ?> >
<?= $product->x; ?>x<?= $product->y; ?>x<?= $product->z; ?> cm
</option>
现在。。。我想做一个像这样的数组
data['category'] = "<?= $product->category; ?>"
data['color'] = "<?= $product->color; ?>"... etc
您可以调用option元素的.data以便
var $selected = $('#myselect option:selected');
var data = $selected.data();
注意:如果您已使用数据api将任何附加数据添加到也将出现的元素中
另一种使用
看看
对于此HTML:
<select id="selectCategory">
<option value="1" data-category="1">Value 1-1</option>
<option value="2" data-category="1">Value 2-1</option>
<option value="3" data-category="1">Value 3-1</option>
<option value="4" data-category="1">Value 4-1</option>
<option value="5" data-category="1">Value 5-1</option>
<option value="10" data-category="2">Value 1-2</option>
<option value="20" data-category="2">Value 2-2</option>
<option value="30" data-category="3">Value 3-3</option>
<option value="40" data-category="3">Value 4-3</option>
<option value="50" data-category="3">Value 5-3</option>
</select>
<ul id="selectedCategory"></ul>
该代码:
$(function(){
var selectElement = $("#selectCategory");
var items = [
{cat:1, col:"red", val:"1 red" },
{cat:1, col:"blue", val:"1 blue" },
{cat:2, col:"red", val:"2 red" },
{cat:2, col:"blue", val:"2 blue" },
{cat:3, col:"red", val:"3 red" },
{cat:3, col:"blue", val:"3 blue" }
];
// please note: this code id broken out to show you the distinct steps - you can make this much more succinct
function displaySelectedCategory(){
// find the data-category of the selected option
var selectedCategory = selectElement
.find("option:selected")
.attr("data-category"); // or data("category")
// filter the items according to the category (this is your array that you want - I think)
var filtered = $(items).filter(function(index, item){
// this is the evaluation that filters the list
return item.cat == selectedCategory; // || item.name="???" || item.color="red"
});
// get a handle on the output destination (emptied)
var outputElem = $("#selectedCategory").empty();
// traverse the filtered items and append and element, based upon that item, for each
$(filtered).each(function(index, item){
var li = $("<li>").text(item.val);
outputElem.append(li);
})
}
selectElement.change(displaySelectedCategory);
});
它应该根据您在下拉列表中选择的内容构建一个项目列表,然后根据这些过滤的项目添加元素,这样您就可以看到它正在工作
HTH那么-你有JSON吗?页面中的对象数组,您希望根据下拉列表中选择的选项从中进行选择?从这个选择中,您想要一个对象集合,它由这些JSON对象上的一些数据元素组成?
$(function(){
var selectElement = $("#selectCategory");
var items = [
{cat:1, col:"red", val:"1 red" },
{cat:1, col:"blue", val:"1 blue" },
{cat:2, col:"red", val:"2 red" },
{cat:2, col:"blue", val:"2 blue" },
{cat:3, col:"red", val:"3 red" },
{cat:3, col:"blue", val:"3 blue" }
];
// please note: this code id broken out to show you the distinct steps - you can make this much more succinct
function displaySelectedCategory(){
// find the data-category of the selected option
var selectedCategory = selectElement
.find("option:selected")
.attr("data-category"); // or data("category")
// filter the items according to the category (this is your array that you want - I think)
var filtered = $(items).filter(function(index, item){
// this is the evaluation that filters the list
return item.cat == selectedCategory; // || item.name="???" || item.color="red"
});
// get a handle on the output destination (emptied)
var outputElem = $("#selectedCategory").empty();
// traverse the filtered items and append and element, based upon that item, for each
$(filtered).each(function(index, item){
var li = $("<li>").text(item.val);
outputElem.append(li);
})
}
selectElement.change(displaySelectedCategory);
});