Add jQuery version check to existing jQuery presence check

Fixes #14809.
Closes #14825.

Gruntfile.js

@@ -37,8 +37,21 @@ module.exports = function (grunt) {
             ' * Copyright 2011-<%= grunt.template.today("yyyy") %> <%= pkg.author %>\n' +
             ' * Licensed under <%= pkg.license.type %> (<%= pkg.license.url %>)\n' +
             ' */\n',
-    // NOTE: This jqueryCheck code is duplicated in customizer.js; if making changes here, be sure to update the other copy too.
-    jqueryCheck: 'if (typeof jQuery === \'undefined\') { throw new Error(\'Bootstrap\\\'s JavaScript requires jQuery\') }\n\n',
+    // NOTE: This jqueryCheck/jqueryVersionCheck code is duplicated in customizer.js;
+    //       if making changes here, be sure to update the other copy too.
+    jqueryCheck: [
+      'if (typeof jQuery === \'undefined\') {',
+      '  throw new Error(\'Bootstrap\\\'s JavaScript requires jQuery\')',
+      '}\n'
+    ].join('\n'),
+    jqueryVersionCheck: [
+      '+function ($) {',
+      '  var version = $.fn.jquery.split(\' \')[0].split(\'.\')',
+      '  if ((version[0] < 2 && version[1] < 9) || (version[0] == 1 && version[1] == 9 && version[2] < 1)) {',
+      '    throw new Error(\'Bootstrap\\\'s JavaScript requires jQuery version 1.9.1 or higher\')',
+      '  }',
+      '}(jQuery);\n\n'
+    ].join('\n'),
 
     // Task configuration.
     clean: {
@@ -93,7 +106,7 @@ module.exports = function (grunt) {
 
     concat: {
       options: {
-        banner: '<%= banner %>\n<%= jqueryCheck %>',
+        banner: '<%= banner %>\n<%= jqueryCheck %>\n<%= jqueryVersionCheck %>',
         stripBanners: false
       },
       bootstrap: {

bower.json

@@ -33,6 +33,6 @@
     "test-infra"
   ],
   "dependencies": {
-    "jquery": ">= 1.9.0"
+    "jquery": ">= 1.9.1"
   }
 }

docs/assets/js/src/customizer.js

@@ -319,7 +319,19 @@ window.onload = function () { // wait for load in a dumb way because B-0
 
   function generateJS(preamble) {
     var $checked = $('#plugin-section input:checked')
-    var jqueryCheck = 'if (typeof jQuery === "undefined") { throw new Error("Bootstrap\'s JavaScript requires jQuery") }\n\n'
+    var jqueryCheck = [
+      'if (typeof jQuery === \'undefined\') {',
+      '  throw new Error(\'Bootstrap\\\'s JavaScript requires jQuery\')',
+      '}\n'
+    ].join('\n')
+    var jqueryVersionCheck = [
+      '+function ($) {',
+      '  var version = $.fn.jquery.split(\' \')[0].split(\'.\')',
+      '  if ((version[0] < 2 && version[1] < 9) || (version[0] == 1 && version[1] == 9 && version[2] < 1)) {',
+      '    throw new Error(\'Bootstrap\\\'s JavaScript requires jQuery version 1.9.1 or higher\')',
+      '  }',
+      '}(jQuery);\n\n'
+    ].join('\n')
 
     if (!$checked.length) return false
 
@@ -329,7 +341,7 @@ window.onload = function () { // wait for load in a dumb way because B-0
       .join('\n')
 
     preamble = cw + preamble
-    js = jqueryCheck + js
+    js = jqueryCheck + jqueryVersionCheck + js
 
     return {
       'bootstrap.js': preamble + js,