SOURCE

 var params = {};
 var param1 = [];
 var param3 = [];
 for(var i = 0; i < 3; i++){
        var param0 = {};
        param0['qk'] = 'one';
        param0['kb'] = 'two';
        param0['sx'] = 'three';
        param1.push(param0);
        param3.push(param0);
 }
 var param2 = {};
 param2['name'] = 'jack';
 params['gqsxlist'] = param1;
 params['yqtbBasicData'] = param2;
 params['zydtlist'] = param3;
var json = JSON.stringify(params);
console.log(json);