使用encode uri(uri)对加载方法输入进行编码;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script>
    var table_length=10,table_key="",page=1;
    function reload_table(){
        $("#load_table").load(encodeURI("manage_table_engine.php?mode=tr&table=generator_tables&table_id=1&length=" + table_length + "&key=" + table_key + "&page=" + page));
    }
</script>
<input onKeyUp="table_key=this.value;reload_table();" type="search" class="form-control input-sm" placeholder="" aria-controls="datatable-responsive"/>