[英]Select a value on a drop down field with then pre selects values in a multi-select field
I have two fields. 我有两个领域。 I am dynamically pulling in values for each field.
我正在动态获取每个字段的值。 I can not hard code any of the data because it its changing.
我无法对任何数据进行硬编码,因为它在变化。
With javascript i want to select a value with the 1st single select drop down field. 使用javascript,我想使用第一个单选下拉列表选择一个值。 on click i want the second one to update with the matching ids.
点击我想让第二个更新匹配的ID。
ex (again values are dynamically getting pulled) ex(再次动态获取值)
field 1- single select drop down list Name (text displayed) - Id (value submitted) Fruits - 1 Vegetables - 2 Sweets - 3 Meat- 4 字段1-单选下拉列表名称(显示文本)-ID(提交值)水果-1蔬菜-2糖果-3肉类-4
Field 2- multi sect list box Name (text displayed) - Id (value submitted) Apple - 1 Carrot-2 Ice Cream - 3 Hamburger- 4 Orange- 1 Steak -4 Chocolate- 3 Raspberries -1 字段2-多派别列表框名称(显示的文本)-ID(提交的值)苹果-1胡萝卜2冰淇淋-3汉堡包-4橙子-1牛排-4巧克力-3树莓-1
Desired outcome: If the user selects Fruits from field 1 then the field 2 should pre select apple, orange, Raspberries (because they all have the same id of 1) 期望的结果:如果用户从字段1中选择“水果”,则字段2应预先选择苹果,橙子,覆盆子(因为它们的ID均为1)
I am dynamically pulling the data from salesforce in c# Page_Init data binding it to the fields 我正在从c#Page_Init数据中的Salesforce中动态提取数据,并将其绑定到字段
<asp:Panel CssClass="form-group" runat="server">
<label id="Field1" class="control-label" for="Field2" runat="server">
<asp:DropDownList ID="Field1" ClientIDMode="Static"
onchange="myFunction(event)" CssClass="form-control" runat="server" />
<asp:Panel CssClass="form-group" runat="server">
<label id="field2" class="control-label" for="field2" runat="server">
</label>
<asp:ListBox ID="field2" CssClass="form-control" SelectionMode="Multiple"
ClientIDMode="Static" runat="server" />
</asp:Panel>
<script type="text/javascript">
function myFunction(e) {
document.getElementById("field2").value = e.target.value
}
</script>
I originally had this jquery in when i was just updating a single select drop down field. 我最初只是在更新单个选择下拉字段时才使用此jquery。 it is still selecting 1 value not all the values with the matching ids
它仍然选择1个值,而不是所有具有匹配ID的值
I ended up looking up a similar request and edited it to be dynamic values not hard coded 我最终查找了类似的请求,并将其编辑为动态值,而不是硬编码
<select name='field1' id="field1">
<option value="1">Fruits</option>
<option value="2">Vegetables</option>
<option value="3">Sweets</option>
<option value="4">Meat</option>
</select>
<select name='field2' id="field2" multiple >
<option value="1">Apple</option>
<option value="2">Carrot</option>
<option value="3">Ice Cream </option>
<option value="4">Hamburger</option>
<option value="1">Orange</option>
<option value="4">Steak </option>
<option value="3">Chocolate</option>
<option value="1">Raspberries </option>
</select>
var foodsToSelect = $("#field1").val();
var foods = document.getElementById( 'field2' );
for ( var i = 0, l = foods.options.length, o; i < l; i++ )
{
o = foods.options[i];
if ( foodsToSelect.indexOf( o.value ) != -1 )
{
o.selected = true;
}
}
http://jsfiddle.net/jw8rugse/2/ http://jsfiddle.net/jw8rugse/2/
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