问如何在查询字符串中删除表单中的空字段？

EN

<form method="get" id="form1">
    <input type="text" name="aaa" id="aaa" /> 
    <input type="text" name="bbb" id="bbb" /> 
    <input type="submit" value="Go" />
</form>
<script type="text/javascript">
    $(document).ready(function() {
        $("#form1").submit(function() {
            if($("#bbb").val()=="") {
                    $("#bbb").remove();
            }
        });
     });
</script>

RewriteCond %{REQUEST_URI} \/formpage\/?
RewriteCond %{QUERY_STRING} ^(.*)(&|\?)[a-z-_]+=(?=&|$)(.*)$ [NC]
RewriteRule .* \/formpage?%1%2 [R,L,NE]

- `^(.*)` - The `^` symbol signifies that this is the START of the query string, and the period `.` is saying ANY character.  The asterisk `*` is a modifier against the period wildcard, saying that any number of them should be included in the scope.
- `(&|\?)[a-z-_]+=(?=&|$)` - This is the most interesting bit (if you like this kind of thing ...).  This finds your empty query string.  Between the first parenthesis, we're stating that the string begins with an ampersand OR a literal question mark (backslash makes the following character literal, in this case - otherwise the question mark has a different meaning).  Between the square brackets, we're saying match any character from a-z, OR hyphen `-` OR underscore `_`, and immediately after that the plus symbol `+` is stating that we should match any of those preceding characters 1 or more times.  The equals sign `=` is just what it looks like (the equals between your query string name and its value). Finally, between the next parenthesis, we have a lookahead clause `?=`that states that the next character MUST BE an ampersand OR the very end of the line, as indicated by the dollar sign `$`.  The intention here is that your query string will only be considered a match if it's followed by the start of another query string or the end of the line _without_ including a value.
- The final bits `(.*)$ [NC]` are just matching against any and all content that follows an empty query string, and the `[NC]` clause means that this is cASe iNsENsiTIve.

<form method="get" id="form1">
    <input type="text" name="aaa" id="aaa" /> 
    <input type="text" name="bbb" id="bbb" /> 
    <input type="submit" value="Go" />
</form>
<script type="text/javascript">
    $(document).ready(function() {
        $("#form1").submit(function() {
            if($("#bbb").val()=="") {
                    $("#bbb").prop('disabled', true);
            }
        });
     });
</script>