For HTML5 script tags you can omit the type attribute when its value is JavaScript. From MDN -> https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script - Omitted or a JavaScript MIME type: For HTML5-compliant browsers this indicates the script is JavaScript. HTML5 specification urges authors to omit the attribute rather than provide a redundant MIME type.

Author: jbampton

README.md

@@ -54,13 +54,13 @@ and require plotly.js using CommonJS as `var Plotly = require('plotly.js');` or
 #### Use the plotly.js CDN hosted by Fastly
 ```html
 <!-- Latest compiled and minified plotly.js JavaScript -->
-<script type="text/javascript" src="https://cdn.plot.ly/plotly-latest.min.js"></script>
+<script src="https://cdn.plot.ly/plotly-latest.min.js"></script>
 
 <!-- OR use a specific plotly.js release (e.g. version 1.5.0) -->
-<script type="text/javascript" src="https://cdn.plot.ly/plotly-1.5.0.min.js"></script>
+<script src="https://cdn.plot.ly/plotly-1.5.0.min.js"></script>
 
 <!-- OR an un-minified version is also available -->
-<script type="text/javascript" src="https://cdn.plot.ly/plotly-latest.js"></script>
+<script src="https://cdn.plot.ly/plotly-latest.js"></script>
 ```
 
 and use the `Plotly` object in the window scope.
@@ -99,7 +99,7 @@ To learn more about the plotly.js module architecture, refer to our [modularizin
 Important: the plotly.js code base contains some non-ascii characters. Therefore, please make sure to set the `charset` attribute to `"utf-8"` in the script tag that imports your plotly.js bundle. For example:
 
 ```html
-<script type="text/javascript" src="my-plotly-bundle.js" charset="utf-8"></script>
+<script src="my-plotly-bundle.js" charset="utf-8"></script>
 ```
 
 

devtools/image_viewer/index.html

@@ -7,6 +7,6 @@
     <div id="plot-images"></div>
     <pre id="plot-mock"></pre>
 
-    <script type="text/javascript" src="../../build/image_viewer-bundle.js"></script>
+    <script src="../../build/image_viewer-bundle.js"></script>
 </body>
 </html>

devtools/test_dashboard/index.html

@@ -23,8 +23,8 @@
   <!-- <script>if(typeof window.Int16Array !== 'function')document.write("<scri"+"pt src='../../dist/extras/typedarray.min.js'></scr"+"ipt>");</script>
   <script>document.write("<scri"+"pt src='../../dist/extras/request_animation_frame.js'></scr"+"ipt>");</script> -->
 
-  <script type="text/javascript" src="../../dist/extras/mathjax/MathJax.js?config=TeX-AMS-MML_SVG"></script>
-  <script id="source" type="text/javascript" src="../../build/plotly.js"></script>
-  <script type="text/javascript" src="../../build/test_dashboard-bundle.js"></script>
+  <script src="../../dist/extras/mathjax/MathJax.js?config=TeX-AMS-MML_SVG"></script>
+  <script id="source" src="../../build/plotly.js"></script>
+  <script src="../../build/test_dashboard-bundle.js"></script>
 </body>
 </html>

tasks/stats.js

@@ -51,13 +51,13 @@ function getInfoContent() {
         'Import plotly.js as:',
         '',
         '```html',
-        '<script type="text/javascript" src="plotly.min.js"></script>',
+        '<script src="plotly.min.js"></script>',
         '```',
         '',
         'or the un-minified version as:',
         '',
         '```html',
-        '<script type="text/javascript" src="plotly.js" charset="utf-8"></script>',
+        '<script src="plotly.js" charset="utf-8"></script>',
         '```',
         '',
         '### To support IE9',
@@ -74,7 +74,7 @@ function getInfoContent() {
         '*Before* the plotly.js script tag, add:',
         '',
         '```html',
-        '<script type="text/javascript" src="mathjax/MathJax.js?config=TeX-AMS-MML_SVG"></script>',
+        '<script src="mathjax/MathJax.js?config=TeX-AMS-MML_SVG"></script>',
         '```',
         '',
         'You can grab the relevant MathJax files in `./dist/extras/mathjax/`.',
@@ -90,8 +90,8 @@ function getInfoContent() {
         '*After* the plotly.js script tag, add:',
         '',
         '```html',
-        '<script type="text/javascript" src="plotly-locale-de-ch.js"></script>',
-        '<script type="text/javascript">Plotly.setPlotConfig({locale: \'de-CH\'})</script>',
+        '<script src="plotly-locale-de-ch.js"></script>',
+        '<script>Plotly.setPlotConfig({locale: \'de-CH\'})</script>',
         '```',
         '',
         'The first line loads and registers the locale definition with plotly.js, the second sets it as the default for all Plotly plots.',

test/image/index.html

@@ -2,9 +2,9 @@
 <html>
 <body>
 <!-- this index file gets copied in to the image server docker -->
-<script type="text/javascript" src="../plotly.js/dist/extras/mathjax/MathJax.js?config=TeX-AMS-MML_SVG"></script>
-<script type="text/javascript" src="../plotly.js/build/plotly.js" charset="utf-8"></script>
-<script type="text/javascript" src="../plotly.js/dist/plotly-geo-assets.js" charset="utf-8"></script>
-<script type="text/javascript" src="./main.js"></script>
+<script src="../plotly.js/dist/extras/mathjax/MathJax.js?config=TeX-AMS-MML_SVG"></script>
+<script src="../plotly.js/build/plotly.js" charset="utf-8"></script>
+<script src="../plotly.js/dist/plotly-geo-assets.js" charset="utf-8"></script>
+<script src="./main.js"></script>
 </body>
 </html>