Using variables in js.eval() function in scala js

Question

I am using javascript to fetch data from a text box using js.eval() function like :

val amount=js.eval("document.getElementById('amount').value;")

It is working fine when I am writing the id directly i.e. 'amount' in this case. But I want to create a function which will receive the id and then use the variable id. I tried using '$' sign also like :

def getAmount(amount_id:String):Unit={
     println("Amount is : "+js.eval(s"document.getElementById(${id}).value;"))

But it is not working. Any suggestions ?

sjrd · Accepted Answer · 2016-11-22 07:20:25Z

2

Do not use js.eval. Use the interoperability features of Scala.js instead:

import org.scalajs.dom
import dom.html

def getAmount(amount_id:String): Unit = {
  val input = dom.document.getElementById(amount_id).asInstanceOf[html.Input]
  println(s"Amount is : ${input.value}")
}

answered Nov 22, 2016 at 7:20

sjrd

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1 Comment

Ishan Over a year ago

Excellent.. Thanks a lot !!

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