Fix: fix dice number generator in JS examples (open-telemetry#5565)

Author: oscar60310

content/en/docs/languages/js/getting-started/nodejs.md

@@ -80,7 +80,7 @@ const PORT: number = parseInt(process.env.PORT || '8080');
 const app: Express = express();
 
 function getRandomNumber(min: number, max: number) {
-  return Math.floor(Math.random() * (max - min) + min);
+  return Math.floor(Math.random() * (max - min + 1) + min);
 }
 
 app.get('/rolldice', (req, res) => {
@@ -102,7 +102,7 @@ const PORT = parseInt(process.env.PORT || '8080');
 const app = express();
 
 function getRandomNumber(min, max) {
-  return Math.floor(Math.random() * (max - min) + min);
+  return Math.floor(Math.random() * (max - min + 1) + min);
 }
 
 app.get('/rolldice', (req, res) => {

content/en/docs/languages/js/instrumentation.md

@@ -75,7 +75,7 @@ TypeScript) and add the following code to it:
 ```ts
 /*dice.ts*/
 function rollOnce(min: number, max: number) {
-  return Math.floor(Math.random() * (max - min) + min);
+  return Math.floor(Math.random() * (max - min + 1) + min);
 }
 
 export function rollTheDice(rolls: number, min: number, max: number) {
@@ -92,7 +92,7 @@ export function rollTheDice(rolls: number, min: number, max: number) {
 ```js
 /*dice.js*/
 function rollOnce(min, max) {
-  return Math.floor(Math.random() * (max - min) + min);
+  return Math.floor(Math.random() * (max - min + 1) + min);
 }
 
 function rollTheDice(rolls, min, max) {
@@ -558,7 +558,7 @@ import { trace } from '@opentelemetry/api';
 const tracer = trace.getTracer('dice-lib');
 
 function rollOnce(min: number, max: number) {
-  return Math.floor(Math.random() * (max - min) + min);
+  return Math.floor(Math.random() * (max - min + 1) + min);
 }
 
 export function rollTheDice(rolls: number, min: number, max: number) {
@@ -579,7 +579,7 @@ const { trace } = require('@opentelemetry/api');
 const tracer = trace.getTracer('dice-lib');
 
 function rollOnce(min, max) {
-  return Math.floor(Math.random() * (max - min) + min);
+  return Math.floor(Math.random() * (max - min + 1) + min);
 }
 
 function rollTheDice(rolls, min, max) {
@@ -707,7 +707,7 @@ nested operation. The following sample creates a nested span that tracks
 ```ts
 function rollOnce(i: number, min: number, max: number) {
   return tracer.startActiveSpan(`rollOnce:${i}`, (span: Span) => {
-    const result = Math.floor(Math.random() * (max - min) + min);
+    const result = Math.floor(Math.random() * (max - min + 1) + min);
     span.end();
     return result;
   });
@@ -732,7 +732,7 @@ export function rollTheDice(rolls: number, min: number, max: number) {
 ```js
 function rollOnce(i, min, max) {
   return tracer.startActiveSpan(`rollOnce:${i}`, (span) => {
-    const result = Math.floor(Math.random() * (max - min) + min);
+    const result = Math.floor(Math.random() * (max - min + 1) + min);
     span.end();
     return result;
   });
@@ -849,7 +849,7 @@ information about the current operation that it's tracking.
 ```ts
 function rollOnce(i: number, min: number, max: number) {
   return tracer.startActiveSpan(`rollOnce:${i}`, (span: Span) => {
-    const result = Math.floor(Math.random() * (max - min) + min);
+    const result = Math.floor(Math.random() * (max - min + 1) + min);
 
     // Add an attribute to the span
     span.setAttribute('dicelib.rolled', result.toString());
@@ -865,7 +865,7 @@ function rollOnce(i: number, min: number, max: number) {
 ```js
 function rollOnce(i, min, max) {
   return tracer.startActiveSpan(`rollOnce:${i}`, (span) => {
-    const result = Math.floor(Math.random() * (max - min) + min);
+    const result = Math.floor(Math.random() * (max - min + 1) + min);
 
     // Add an attribute to the span
     span.setAttribute('dicelib.rolled', result.toString());
@@ -1466,7 +1466,7 @@ const tracer = trace.getTracer('dice-lib');
 const meter = metrics.getMeter('dice-lib');
 
 function rollOnce(min: number, max: number) {
-  return Math.floor(Math.random() * (max - min) + min);
+  return Math.floor(Math.random() * (max - min + 1) + min);
 }
 
 export function rollTheDice(rolls: number, min: number, max: number) {
@@ -1488,7 +1488,7 @@ const tracer = trace.getTracer('dice-lib');
 const meter = metrics.getMeter('dice-lib');
 
 function rollOnce(min, max) {
-  return Math.floor(Math.random() * (max - min) + min);
+  return Math.floor(Math.random() * (max - min + 1) + min);
 }
 
 function rollTheDice(rolls, min, max) {
@@ -1523,7 +1523,7 @@ const counter = meter.createCounter('dice-lib.rolls.counter');
 
 function rollOnce(min: number, max: number) {
   counter.add(1);
-  return Math.floor(Math.random() * (max - min) + min);
+  return Math.floor(Math.random() * (max - min + 1) + min);
 }
 ```
 
@@ -1535,7 +1535,7 @@ const counter = meter.createCounter('dice-lib.rolls.counter');
 
 function rollOnce(min, max) {
   counter.add(1);
-  return Math.floor(Math.random() * (max - min) + min);
+  return Math.floor(Math.random() * (max - min + 1) + min);
 }
 ```