js 拼接两个json串

 var s1 = '{dbName: "a", length: "b", nullSign: "2", dataType: "1"} ';
var s2 = '{wName: "a", wProperty: "1"}';
eval_r("var o1 =" + s1);
eval_r("var o2=" + s2);
for(var i in o2){
o1[i] = o2[i];
}

这样可以把两个json串拼到一起，形成一个json串即

'{dbName: "a", length: "b", nullSign: "2", dataType: "1",wName: "a", wProperty: "1"}'