kotlin-stdlib / org.w3c.fetch / Headers Headers JS 1.1 open class Headers (source) Exposes the JavaScript Headers to Kotlin Constructors JS 1.1 <init> Exposes the JavaScript Headers to Kotlin Headers ( init : dynamic = definedExternally ) Functions JS 1.1 append fun append ( name : String , value : String ) JS 1.1 delete fun delete ( name : String ) JS 1.1 get fun get ( name : String ) : String ? JS 1.1 has fun has ( name : String ) : Boolean JS 1.1 set fun set ( name : String , value : String )