如何在页面刷新后保留所选项目,我在多重选择中有一种语言,
我现在尝试使用java脚本这里是我的代码它无法正常工作,任何人都可以指导我如何选择它
我的HTML代码
<div class="control-group">
<label for="textfield" class="control-label">Language</label>
<div class="controls">
<select name="myLanguage" id="myLanguage" multiple="multiple">
<option value="English,">English,</option>
<option value="Arabic,">Arabic,</option>
<option value="Hindi,">Hindi,</option>
<option value="Malayalam,">Malayalam,</option>
<option value="Danish,">Danish,</option>
</select>
</div>
</div>
的javascript
document.getElementById('myLanguage').value = "<?php echo $_GET['language'];?>";
答案 0 :(得分:1)
如果你使用jQuery,请使用:
$(document).ready(function(){
$('#myLanguage').val("<?php echo $_GET['language'];?>");
});
答案 1 :(得分:0)
Javascript没有使用会话变量,因此无法将值添加到会话中。你仍然可以做两件事:
选项1: 使用Jquery将值添加到cookie:
Set: $.cookie("test", 1);
Read: var value = $.cookie("test");
了解详情:How do I set/unset cookie with jQuery?
选项2: 将值发布到新页面并请求该页面:
读取值可以通过以下方式完成:
Read: $_REQUEST["my_variable"];
注意:读数值可以像:
$("#myLanguage option:selected").text();
答案 2 :(得分:0)
如果您使用HTML5作为doctype
,则可以轻松地将值存储在localStorage
中。
参考:http://www.w3schools.com/html/html5_webstorage.asp
设置它:
localStorage.setItem("variable_name", variable_value);
获得它:
localStorage.variable_name
删除它:
localStorage.removeItem("variable_name");
如果您愿意,也可以将js cookies与 jquery.cookie 插件一起使用。
答案 3 :(得分:0)
As mentioned in the comments, when using the multiple attribute,
the name attribute must be an array such as:
<div class="control-group">
<label for="myLanguage[]" class="control-label">Language</label>
<div class="controls">
<select name="myLanguage[]" multiple="multiple">
<option value="English,">English,</option>
<option value="Arabic,">Arabic,</option>
<option value="Hindi,">Hindi,</option>
<option value="Malayalam,">Malayalam,</option>
<option value="Danish,">Danish,</option>
</select>
</div>
</div>
javascript // Note: I'm not so sure on the following syntax
var myLanguage[] = document.elements('myLanguage[]').value;
答案 4 :(得分:0)
<?php
$languages = array(
'en' => 'english',
'vi' => 'vietnamese',
'cn' => 'chinese'
);
if (isset($_GET['lang']) AND array_key_exists($_GET['lang'], $languages))
{
include './lang/' . $languages[$_GET['lang']] . '.php';
}
else
{
include './lang/english.php';
}
?>