在html选项标记中使用javascript变量
我发现与我的问题相关的帖子很少,但似乎没有一篇适合我的情况。我有一个JSP页面,在其中的某个特定点,我需要检索在selected下拉列表中选择的选项,javascript代码如下所示:在html选项标记中使用javascript变量,javascript,jquery,html,jsp,scriptlet,Javascript,Jquery,Html,Jsp,Scriptlet,我发现与我的问题相关的帖子很少,但似乎没有一篇适合我的情况。我有一个JSP页面,在其中的某个特定点,我需要检索在selected下拉列表中选择的选项,javascript代码如下所示: <script type="text/javascript"> var arr = []; var listItems = $("#brand-id li span"); listItems.each(function(idx, span) {
<script type="text/javascript">
var arr = [];
var listItems = $("#brand-id li span");
listItems.each(function(idx, span) {
var brand = $(span).html();
arr.push(brand.toString());
});
</script>
<option selected="selected" value="<%=arr[i]%>"><%=arr[i]%></option>
<script type="text/javascript">
var select = "";
var arr = [];
var listItems = $("#brand-id li span");
listItems.each(function(idx, span) {
var brand = $(span).html();
arr.push(brand.toString());
});
//arr having values
console.log(arr);
select = ' <select id="brand-select-id" data-placeholder="Select Brand" name="brand" multiple="" class="chosen-select" style="">';
for (var j = 0; j < arr.length; j++) {
//appending options in selectbox
select += '<option selected="selected"value="' + arr[j] + '">' + arr[j] + '</option>';
}
select += '</select>';
//append select to div
$(select).appendTo('.select');
</script>
现在我需要将保存在arr中的值发送到服务器。为此,将使用选项标记。代码如下:
<script type="text/javascript">
var arr = [];
var listItems = $("#brand-id li span");
listItems.each(function(idx, span) {
var brand = $(span).html();
arr.push(brand.toString());
});
</script>
<option selected="selected" value="<%=arr[i]%>"><%=arr[i]%></option>
<script type="text/javascript">
var select = "";
var arr = [];
var listItems = $("#brand-id li span");
listItems.each(function(idx, span) {
var brand = $(span).html();
arr.push(brand.toString());
});
//arr having values
console.log(arr);
select = ' <select id="brand-select-id" data-placeholder="Select Brand" name="brand" multiple="" class="chosen-select" style="">';
for (var j = 0; j < arr.length; j++) {
//appending options in selectbox
select += '<option selected="selected"value="' + arr[j] + '">' + arr[j] + '</option>';
}
select += '</select>';
//append select to div
$(select).appendTo('.select');
</script>
我的编译HTML代码:
<div class="form-group">
<label class="col-sm-3 control-label no-padding-right" for="form-field-1">Brand:</label>
<div id="brand-id" class="col-sm-9">
<select id="brand-select-id" data-placeholder="Select Brand" name="brand" multiple="" class="chosen-select" style="display: none;">
<option selected="selected" value="A">A</option>
<option selected="selected" value="B">B</option>
<option selected="selected" value="C">C</option>
<option value="D">D</option>
<option value="E">E</option>
</select>
<div class="chosen-container chosen-container-multi" style="width: 83%;" title="" id="brand_select_id_chosen">
<ul class="chosen-choices">
<li class="search-choice"><span>C</span><a class="search-choice-close" data-option-array-index="2"></a></li>
<li class="search-choice"><span>A</span><a class="search-choice-close" data-option-array-index="0"></a></li>
<li class="search-choice"><span>B</span><a class="search-choice-close" data-option-array-index="1"></a></li>
<li class="search-field"><input type="text" value="Select Brand" class="" autocomplete="off" style="width: 25px;"></li>
</ul>
<div class="chosen-drop">
<ul class="chosen-results">
<li class="result-selected" style="" data-option-array-index="0">A</li>
<li class="result-selected" style="" data-option-array-index="1">B</li>
<li class="result-selected" style="" data-option-array-index="2">C</li>
<li class="active-result" style="" data-option-array-index="3">D</li>
<li class="active-result" style="" data-option-array-index="4">E</li>
</ul>
</div>
</div>
</div>
</div>
我的困惑是如何在选项标记中使用arr[I],这是否可能。如果没有,我如何以其他方式完成相同的任务。谢谢
JSP文件:
<div class="form-group">
<label class="col-sm-3 control-label no-padding-right" for="form-field-1">Brand:</label>
<div class="col-sm-9">
<select data-placeholder="Select Brand" name="brand" multiple class="chosen-select col-xs-10 col-sm-10">
<%
// user.get("brand") gets the already selected brands by the user
// masterRecords.get("brandslist") gets the complete list of brands from LDAP whether selected or not selected
String brands="";
if(user.get("brand")!=null && !user.get("brand").isEmpty())
brands =user.get("brand").toLowerCase();
if(masterRecords.get("brandslist")!=null && masterRecords.get("brandslist").length > 0){
for(String brand:masterRecords.get("brandslist")){
if(brands.contains(brand.toLowerCase().trim())){%>
<option selected="selected" value="<%=brand.trim().toLowerCase()%>"><%=brand.trim()%></option>
<%}else{%>
<option value="<%=brand.trim().toLowerCase()%>"><%=brand.trim()%></option>
<%}
}
}%>
</select>
</div>
</div>
在同一个JSP文件中,我添加了JS代码,如下所示:
<script type="text/javascript">
var arr = [];
var listItems = $("#brand-id li span");
listItems.each(function(idx, span) {
var brand = $(span).html();
arr.push(brand.toString());
});
</script>
<option selected="selected" value="<%=arr[i]%>"><%=arr[i]%></option>
<script type="text/javascript">
var select = "";
var arr = [];
var listItems = $("#brand-id li span");
listItems.each(function(idx, span) {
var brand = $(span).html();
arr.push(brand.toString());
});
//arr having values
console.log(arr);
select = ' <select id="brand-select-id" data-placeholder="Select Brand" name="brand" multiple="" class="chosen-select" style="">';
for (var j = 0; j < arr.length; j++) {
//appending options in selectbox
select += '<option selected="selected"value="' + arr[j] + '">' + arr[j] + '</option>';
}
select += '</select>';
//append select to div
$(select).appendTo('.select');
</script>
使用您的代码更新的JSP文件:
<div class="form-group">
<label class="col-sm-3 control-label no-padding-right" for="form-field-1">Brand:</label>
<div id="brand-id" class="col-sm-9">
<%
// user.get("brand") gets the already selected brands by the user
// masterRecords.get("brandslist") gets the complete list of brands from LDAP whether selected or not selected
String brands="";
if(user.get("brand")!=null && !user.get("brand").isEmpty())
brands =user.get("brand").toLowerCase();
if(masterRecords.get("brandslist")!=null && masterRecords.get("brandslist").length > 0){
for(String brand:masterRecords.get("brandslist")){
if(brands.contains(brand.toLowerCase().trim())){%>
<div class="select"></div>
<%}
//else part left for now
}
}%>
</select>
</div>
</div>
编辑1:添加了JSP文件中的完整代码。我正在玩“Selected”插件生成的代码,以完成自定义排序。您可以使用for循环将数组值附加到选项中,然后使用jquery的appendTo方法将这些选项放入其中。工作示例: var选择=; var-arr=[]; var listItems=$brand id li span; listItems.eachfunctionidx,span{ var brand=$span.html; arr.pushbrand.toString; }; //具有值的arr console.logarr; 选择=“”; 对于var j=0;j