form

how to add number values into form . what should we give view that takes only number

You can use HTML attributes to set the type of the inputs. For a single input:

{
   view:"text",
   attributes:{ type:"number" }
}

For the entire form:

{
  view:"form",
  elementsConfig:{
    attributes:{ type:"number" }
  },
  elements:[
    {view:"text"}
  ]
}