如何使用jQuery来操纵查询字符串 [英] How to use jquery to manipulate the querystring
问题描述
我有一个选择下拉列表，其中ID映射到值. 在onChange事件上，我想重定向到相同的URL，但在查询字符串后附加"id = value".
I have a select dropdown with id's mapped to values. On the onChange event I want to redirect to the same url but with 'id=value' appended to the querystring.
如何检查查询字符串中是否尚未包含此"id"选项(我不需要多个值)，并根据需要替换/附加.
How do I check that this 'id' option isn't already in the querystring (I don't want multiple values) and replace / append as necessary.
如何检查是否为?"已经在查询字符串中，如果没有，则追加到URL.
How do I check if '?' is already in the querystring and append to the url if its not.
jquery是否有一种简单的方法来做到这一点?
Is there an easy way with jquery to do this?
对于$().ajax(url, {options})调用，它必须在后台执行类似的操作.
我希望我可以做$().redirect( url, { id : $(this).val() })之类的事情.
It must do something similar under the hood for $().ajax(url, {options}) calls.
I was hoping I could just do $().redirect( url, { id : $(this).val() }) or somesuch.
谢谢.
注意:此页面可能传入或传出了几个其他查询选项(在其他表单选项中设置了默认值)，因此替换整个查询字符串不是一个选择.
Note: This page may or may not have a few different query options passed in (which set defaults on other form options) so replacing the whole querystring is not an option.
<html>
<head><script type="text/javascript" src="/jquery-1.3.2.min.js"></script></head>
<body>
<script>
$(function(){
$('#selector').change(function(){
// problem if 'id' option already exists
var url = location.href + '?;id=' + $(this).val();
location.assign( url );
});
});
</script>
<a href="#" onclick="location.assign( location.pathname )">reset</a>
<form>
<select id='selector' name='id'>
<option value='1'>one</option>
<option value='2'>two</option>
<option value='3'>three</option>
</select>
</form>
</body>
</html>
推荐答案
我最终进行了RegExp匹配以覆盖选项. jQuery.param接受哈希并将其序列化为query_string 但它不提供反函数(分解query_string).
I ended up going with a RegExp match to override the options. jQuery.param takes a hash and serialises it to a query_string but it doesn't provide the inverse (breaking up a query_string).
// put function into jQuery namespace
jQuery.redirect = function(url, params) {
url = url || window.location.href || '';
url = url.match(/\?/) ? url : url + '?';
for ( var key in params ) {
var re = RegExp( ';?' + key + '=?[^&;]*', 'g' );
url = url.replace( re, '');
url += ';' + key + '=' + params[key];
}
// cleanup url
url = url.replace(/[;&]$/, '');
url = url.replace(/\?[;&]/, '?');
url = url.replace(/[;&]{2}/g, ';');
// $(location).attr('href', url);
window.location.replace( url );
};
然后在HTML中
$('#selector').change(function(){
$.redirect( location.href, { id : $(this).val() })
})
感谢所有人的答复.
这篇关于如何使用jQuery来操纵查询字符串的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
