如何将字符串转换为数据数组并在ajax post请求中发送

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var data = decodeURIComponent($(this).attr("name"));

var数据的输出是

ldef_index[]=5&lquality[]=0&id[]=&rdef_index[]=315&rquality[]=0&rdef_index[]=7115&rquality[]=0&rdef_index[]=50&rquality[]=0&rdef_index[]=55&rquality[]=0&rdef_index[]=5086&rquality[]=0&rdef_index[]=711&rquality[]=0&rdef_index[]=3229&rquality[]=0&rdef_index[]=7555&rquality[]=0&tslt=c9942&notes=test

如何将此变量转换为在jquery ajax请求中将其作为数据发送？

  $.ajax({
        type : "POST",
        url : 'https://example.com/ajax/test.php',
        data: { ldef_index[]: 5,
                lquality[]: 0,
                id[]= ,
                rdef_index[]: 315,
                rquality[]: 0,
                rdef_index[]: 7115,
                rquality[]: 0,
                rdef_index[]: 50,
                rquality[]: 0,
                rdef_index[]: 55,
                rquality[]: 0,
                rdef_index[]: 5086,
                rquality[]: 0,
                rdef_index[]: 711,
                rquality[]: 0,
                rdef_index[]: 3229,
                rquality[]: 0,
                rdef_index[]: 7555,
                rquality[]: 0,
                tslt: c9942,
                notes: test },
        });