Added possibility to add number or number[] to .val()

jquery/jquery-tests.ts

@@ -3128,6 +3128,8 @@ function test_val() {
     $("#single").val("Single2");
     $("#multiple").val(["Multiple2", "Multiple3"]);
     $("input").val(["check1", "check2", "radio1"]);
+    $("input").val(1);
+    $("input").val([1, 2, 3]);
 }
 
 function test_selector() {

jquery/jquery.d.ts

@@ -1365,7 +1365,7 @@ interface JQuery {
      *
      * @param value A string of text or an array of strings corresponding to the value of each matched element to set as selected/checked.
      */
-    val(value: string|string[]): JQuery;
+    val(value: string|string[]|number|number[]): JQuery;
     /**
      * Set the value of each element in the set of matched elements.
      *