基于Adding a parameter to the URL with JavaScript我试图创建一个脚本,将参数添加到现有网址但有点失败,我不知道为什么......
<script type="javascript">
function insertParam(key, value)
{
key = encodeURI(key); value = encodeURI(value);
var kvp = document.location.search.substr(1).split('&');
var i=kvp.length; var x; while(i--)
{
x = kvp[i].split('=');
if (x[0]==key)
{
x[1] = value;
kvp[i] = x.join('=');
break;
}
}
if(i<0) {kvp[kvp.length] = [key,value].join('=');}
//this will reload the page, it's likely better to store this until finished
document.location.search = kvp.join('&');
}
</script>
<label>
<select name="id" onchange="window.location='somepage.php?page=inserari-note&selected_value='+this.value">
<option>--Alege user--</option>
<?php
while($runrows = mysql_fetch_assoc($run))
{
$user = $runrows ['user_login'];
echo"<option value=\"$user\">$user</option>";
}
?>
</select>
</label>
<label>
<select name="idelev" onchange="insertParam('selected_valueelev',+this.value)">
<option>--Alege Elev--</option>
<?php
while($runrows4 = mysql_fetch_assoc($run4))
{
$elev = $runrows4 ['Nume'];
echo"<option value=\"$elev\">$elev</option>";
}
?>
</select>
</label>
因此,第一个select
正在为学生填充第二个select
,并将网址更改为somepage.php?page=inserari-note&selected_value='+this.value
哪个效果很好,但是当我点击第二个{{1}的选项时}, 什么都没发生。在我看来,它应该添加现有的URL,这是我之前提到的,值select
,以便URL看起来像是&selected_valueelev="chosen-option"
。我做错了什么?
答案 0 :(得分:0)
您应该通过以下方式定义脚本标记:
<script type="text/javascript">
...
</script>
此外,您还有以下语法错误:
// remove + before this.value
<select name="idelev" onchange="insertParam('selected_valueelev',+this.value)">