I have a json like 

```
[
{
    "text": "Acute Myelocytic Leukemia"
},
{
    "text": "Acute Myeloid Leukemia, Adult"
},

{
    "text": "Dengue Fever"
},
{
    "text": "Diphtheria"
},
{
    "text": "Familial Cold Autoinflammatory Syndrome"
},
{
    "text": "Familial Mediterranean Fever"
},

]

```

Now i want to take text only start with 'a' or 'b'.....'z'.

The Result like (Acute Myelocytic Leukemia,Acute Myeloid Leukemia, Adult)

How can i get this result in javascript or jquery.

Please help me. Thanks in advance.