diff --git a/.idea/workspace.xml b/.idea/workspace.xml
new file mode 100644
index 00000000..b49cc98c
--- /dev/null
+++ b/.idea/workspace.xml
@@ -0,0 +1,294 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="e4b636dc-70bd-4d7a-a5e8-54e39e4d8ccf" name="Default Changelist" comment="" />
+    <ignored path="$PROJECT_DIR$/.tmp/" />
+    <ignored path="$PROJECT_DIR$/temp/" />
+    <ignored path="$PROJECT_DIR$/tmp/" />
+    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="FUSProjectUsageTrigger">
+    <session id="-683027025">
+      <usages-collector id="statistics.lifecycle.project">
+        <counts>
+          <entry key="project.closed" value="2" />
+          <entry key="project.open.time.0" value="2" />
+          <entry key="project.open.time.14" value="1" />
+          <entry key="project.opened" value="3" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.extensions.open">
+        <counts>
+          <entry key="js" value="2" />
+          <entry key="json" value="1" />
+          <entry key="md" value="1" />
+          <entry key="yml" value="1" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.types.open">
+        <counts>
+          <entry key="JSON" value="1" />
+          <entry key="JavaScript" value="2" />
+          <entry key="PLAIN_TEXT" value="1" />
+          <entry key="YAML" value="1" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.extensions.edit">
+        <counts>
+          <entry key="js" value="102" />
+          <entry key="md" value="3" />
+          <entry key="yml" value="35" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.types.edit">
+        <counts>
+          <entry key="JavaScript" value="102" />
+          <entry key="PLAIN_TEXT" value="3" />
+          <entry key="YAML" value="35" />
+        </counts>
+      </usages-collector>
+    </session>
+  </component>
+  <component name="FileEditorManager">
+    <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/test/test.js">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="319">
+              <caret line="43" column="4" lean-forward="true" selection-start-line="43" selection-start-column="4" selection-end-line="43" selection-end-column="4" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/Readme.md">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="253">
+              <caret line="42" column="45" selection-start-line="42" selection-start-column="45" selection-end-line="42" selection-end-column="45" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/.travis.yml">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="54">
+              <caret line="2" column="6" lean-forward="true" selection-start-line="2" selection-start-column="6" selection-end-line="2" selection-end-column="6" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/package.json">
+          <provider selected="true" editor-type-id="text-editor" />
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/karma.conf.js">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="81">
+              <caret line="12" column="23" selection-start-line="12" selection-start-column="18" selection-end-line="12" selection-end-column="23" />
+              <folding>
+                <element signature="n#!!doc" expanded="true" />
+              </folding>
+            </state>
+          </provider>
+        </entry>
+      </file>
+    </leaf>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="IdeDocumentHistory">
+    <option name="CHANGED_PATHS">
+      <list>
+        <option value="$PROJECT_DIR$/Readme.md" />
+        <option value="$PROJECT_DIR$/karma.conf.js" />
+        <option value="$PROJECT_DIR$/test/test.js" />
+        <option value="$PROJECT_DIR$/.travis.yml" />
+      </list>
+    </option>
+  </component>
+  <component name="JsBuildToolGruntFileManager" detection-done="true" sorting="DEFINITION_ORDER" />
+  <component name="JsBuildToolPackageJson" detection-done="true" sorting="DEFINITION_ORDER">
+    <package-json value="$PROJECT_DIR$/package.json" />
+  </component>
+  <component name="JsGulpfileManager">
+    <detection-done>true</detection-done>
+    <sorting>DEFINITION_ORDER</sorting>
+  </component>
+  <component name="NodeModulesDirectoryManager">
+    <handled-path value="$PROJECT_DIR$/node_modules" />
+  </component>
+  <component name="NodePackageJsonFileManager">
+    <packageJsonPaths>
+      <path value="$PROJECT_DIR$/package.json" />
+    </packageJsonPaths>
+  </component>
+  <component name="ProjectFrameBounds" extendedState="6">
+    <option name="x" value="325" />
+    <option name="y" value="183" />
+    <option name="width" value="1400" />
+    <option name="height" value="1000" />
+  </component>
+  <component name="ProjectView">
+    <navigator proportions="" version="1">
+      <foldersAlwaysOnTop value="true" />
+    </navigator>
+    <panes>
+      <pane id="Scope" />
+      <pane id="ProjectPane">
+        <subPane>
+          <expand>
+            <path>
+              <item name="exercise3" type="b2602c69:ProjectViewProjectNode" />
+              <item name="exercise3" type="462c0819:PsiDirectoryNode" />
+            </path>
+          </expand>
+          <select />
+        </subPane>
+      </pane>
+    </panes>
+  </component>
+  <component name="PropertiesComponent">
+    <property name="WebServerToolWindowFactoryState" value="false" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$/../homework1" />
+    <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
+    <property name="nodejs_npm_path_reset_for_default_project" value="true" />
+    <property name="nodejs_package_manager_path" value="npm" />
+  </component>
+  <component name="RunDashboard">
+    <option name="ruleStates">
+      <list>
+        <RuleState>
+          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
+        </RuleState>
+        <RuleState>
+          <option name="name" value="StatusDashboardGroupingRule" />
+        </RuleState>
+      </list>
+    </option>
+  </component>
+  <component name="RunManager">
+    <configuration name="jQuery.should have jQuery" type="JavaScriptTestRunnerKarma" factoryName="Karma" temporary="true" nameIsGenerated="true">
+      <config-file value="$PROJECT_DIR$/karma.conf.js" />
+      <karma-package-dir value="$PROJECT_DIR$/node_modules/karma" />
+      <node-interpreter value="project" />
+      <envs />
+      <scope-kind value="TEST" />
+      <test-names>
+        <test-name value="jQuery" />
+        <test-name value="should have jQuery" />
+      </test-names>
+      <method v="2" />
+    </configuration>
+    <recent_temporary>
+      <list>
+        <item itemvalue="Karma.jQuery.should have jQuery" />
+      </list>
+    </recent_temporary>
+  </component>
+  <component name="SvnConfiguration">
+    <configuration />
+  </component>
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="e4b636dc-70bd-4d7a-a5e8-54e39e4d8ccf" name="Default Changelist" comment="" />
+      <created>1552545962354</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1552545962354</updated>
+      <workItem from="1552545963469" duration="3500000" />
+      <workItem from="1552549909606" duration="2732000" />
+      <workItem from="1552890027975" duration="3639000" />
+    </task>
+    <servers />
+  </component>
+  <component name="TestHistory">
+    <history-entry file="jQuery_should_have_jQuery - 2019.03.14 at 15h 32m 32s.xml">
+      <configuration name="jQuery.should have jQuery" configurationId="JavaScriptTestRunnerKarma" />
+    </history-entry>
+  </component>
+  <component name="TimeTrackingManager">
+    <option name="totallyTimeSpent" value="9871000" />
+  </component>
+  <component name="TodoView">
+    <todo-panel id="selected-file">
+      <is-autoscroll-to-source value="true" />
+    </todo-panel>
+    <todo-panel id="all">
+      <are-packages-shown value="true" />
+      <is-autoscroll-to-source value="true" />
+    </todo-panel>
+  </component>
+  <component name="ToolWindowManager">
+    <frame x="-8" y="-8" width="1936" height="1056" extended-state="6" />
+    <layout>
+      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.24973656" />
+      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
+      <window_info id="npm" order="2" side_tool="true" />
+      <window_info id="Favorites" order="3" side_tool="true" />
+      <window_info anchor="bottom" id="Message" order="0" />
+      <window_info anchor="bottom" id="Find" order="1" />
+      <window_info anchor="bottom" id="Run" order="2" weight="0.40347072" />
+      <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
+      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
+      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
+      <window_info anchor="bottom" id="TODO" order="6" weight="0.329718" />
+      <window_info anchor="bottom" id="Docker" order="7" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Version Control" order="8" />
+      <window_info anchor="bottom" id="Event Log" order="9" side_tool="true" />
+      <window_info active="true" anchor="bottom" id="Terminal" order="10" visible="true" weight="0.45119306" />
+      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
+      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
+      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
+    </layout>
+  </component>
+  <component name="TypeScriptGeneratedFilesManager">
+    <option name="version" value="1" />
+  </component>
+  <component name="VcsContentAnnotationSettings">
+    <option name="myLimit" value="2678400000" />
+  </component>
+  <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/karma.conf.js">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="81">
+          <caret line="12" column="23" selection-start-line="12" selection-start-column="18" selection-end-line="12" selection-end-column="23" />
+          <folding>
+            <element signature="n#!!doc" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/Readme.md">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="253">
+          <caret line="42" column="45" selection-start-line="42" selection-start-column="45" selection-end-line="42" selection-end-column="45" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/test/test.js">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="319">
+          <caret line="43" column="4" lean-forward="true" selection-start-line="43" selection-start-column="4" selection-end-line="43" selection-end-column="4" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/package.json">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/.travis.yml">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="54">
+          <caret line="2" column="6" lean-forward="true" selection-start-line="2" selection-start-column="6" selection-end-line="2" selection-end-column="6" />
+        </state>
+      </provider>
+    </entry>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 00000000..0632e509
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,8 @@
+language: node_js
+node_js:
+- "10"
+before_inatall: npm install
+before_script:
+- "export DISPLAY=:99.0"
+- "sh -e /etc/init.d/xvfb start"
+script: npm run test
\ No newline at end of file
diff --git a/karma.conf.js b/karma.conf.js
new file mode 100644
index 00000000..645cacf8
--- /dev/null
+++ b/karma.conf.js
@@ -0,0 +1,71 @@
+// Karma configuration
+// Generated on Thu Mar 14 2019 15:12:26 GMT+0800 (GMT+08:00)
+
+module.exports = function(config) {
+  config.set({
+
+    // base path that will be used to resolve all patterns (eg. files, exclude)
+    basePath: '',
+
+
+    // frameworks to use
+    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
+    frameworks: ['mocha'],
+
+
+    // list of files / patterns to load in the browser
+    files: [
+      'https://cdn.bootcss.com/jquery/2.2.4/jquery.js',
+        'node_modules/should/should.js',
+        'test/**.js'
+    ],
+
+
+    // list of files to exclude
+    exclude: [
+    ],
+
+
+    // preprocess matching files before serving them to the browser
+    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
+    preprocessors: {
+    },
+
+
+    // test results reporter to use
+    // possible values: 'dots', 'progress'
+    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
+    reporters: ['progress'],
+
+
+    // web server port
+    port: 9876,
+
+
+    // enable / disable colors in the output (reporters and logs)
+    colors: true,
+
+
+    // level of logging
+    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
+    logLevel: config.LOG_INFO,
+
+
+    // enable / disable watching file and executing tests whenever any file changes
+    autoWatch: true,
+
+
+    // start these browsers
+    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
+    browsers: ['Chrome'],
+
+
+    // Continuous Integration mode
+    // if true, Karma captures browsers, runs the tests and exits
+    singleRun: false,
+
+    // Concurrency level
+    // how many browser should be started simultaneous
+    concurrency: Infinity
+  })
+}
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 00000000..46317b43
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,3551 @@
+{
+  "name": "exercise3",
+  "version": "0.0.1",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "accepts": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.3.tgz",
+      "integrity": "sha1-w8p0NJOGSMPg2cHjKN1otiLChMo=",
+      "dev": true,
+      "requires": {
+        "mime-types": "~2.1.11",
+        "negotiator": "0.6.1"
+      }
+    },
+    "after": {
+      "version": "0.8.2",
+      "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz",
+      "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8=",
+      "dev": true
+    },
+    "anymatch": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-1.3.2.tgz",
+      "integrity": "sha512-0XNayC8lTHQ2OI8aljNCN3sSx6hsr/1+rlcDAotXJR7C1oZZHCNsfpbKwMjRA3Uqb5tF1Rae2oloTr4xpq+WjA==",
+      "dev": true,
+      "requires": {
+        "micromatch": "^2.1.5",
+        "normalize-path": "^2.0.0"
+      }
+    },
+    "arr-diff": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
+      "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
+      "dev": true,
+      "requires": {
+        "arr-flatten": "^1.0.1"
+      }
+    },
+    "arr-flatten": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
+      "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
+      "dev": true
+    },
+    "arr-union": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
+      "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=",
+      "dev": true
+    },
+    "array-slice": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/array-slice/-/array-slice-0.2.3.tgz",
+      "integrity": "sha1-3Tz7gO15c6dRF82sabC5nshhhvU=",
+      "dev": true
+    },
+    "array-unique": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.2.1.tgz",
+      "integrity": "sha1-odl8yvy8JiXMcPrc6zalDFiwGlM=",
+      "dev": true
+    },
+    "arraybuffer.slice": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.6.tgz",
+      "integrity": "sha1-8zshWfBTKj8xB6JywMz70a0peco=",
+      "dev": true
+    },
+    "assign-symbols": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assign-symbols/-/assign-symbols-1.0.0.tgz",
+      "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=",
+      "dev": true
+    },
+    "async-each": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.2.tgz",
+      "integrity": "sha512-6xrbvN0MOBKSJDdonmSSz2OwFSgxRaVtBDes26mj9KIGtDo+g9xosFRSC+i1gQh2oAN/tQ62AI/pGZGQjVOiRg==",
+      "dev": true
+    },
+    "atob": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.2.tgz",
+      "integrity": "sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==",
+      "dev": true
+    },
+    "backo2": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/backo2/-/backo2-1.0.2.tgz",
+      "integrity": "sha1-MasayLEpNjRj41s+u2n038+6eUc=",
+      "dev": true
+    },
+    "balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+      "dev": true
+    },
+    "base": {
+      "version": "0.11.2",
+      "resolved": "https://registry.npmjs.org/base/-/base-0.11.2.tgz",
+      "integrity": "sha512-5T6P4xPgpp0YDFvSWwEZ4NoE3aM4QBQXDzmVbraCkFj8zHM+mba8SyqB5DbZWyR7mYHo6Y7BdQo3MoA4m0TeQg==",
+      "dev": true,
+      "requires": {
+        "cache-base": "^1.0.1",
+        "class-utils": "^0.3.5",
+        "component-emitter": "^1.2.1",
+        "define-property": "^1.0.0",
+        "isobject": "^3.0.1",
+        "mixin-deep": "^1.2.0",
+        "pascalcase": "^0.1.1"
+      },
+      "dependencies": {
+        "define-property": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/define-property/-/define-property-1.0.0.tgz",
+          "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
+          "dev": true,
+          "requires": {
+            "is-descriptor": "^1.0.0"
+          }
+        },
+        "is-accessor-descriptor": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz",
+          "integrity": "sha512-m5hnHTkcVsPfqx3AKlyttIPb7J+XykHvJP2B9bZDjlhLIoEq4XoK64Vg7boZlVWYK6LUY94dYPEE7Lh0ZkZKcQ==",
+          "dev": true,
+          "requires": {
+            "kind-of": "^6.0.0"
+          }
+        },
+        "is-data-descriptor": {
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+      "dev": true
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+    "yeast": {
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+      "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz",
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+}
diff --git a/package.json b/package.json
index 71c96b0c..0178d3aa 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
   "devDependencies": {
     "karma": "^1.7.0",
     "karma-chrome-launcher": "^2.2.0",
+    "karma-jasmine": "^2.0.1",
     "karma-mocha": "^1.3.0",
     "mocha": "^3.5.0",
     "should": "^11.2.1"
diff --git a/test/test.js b/test/test.js
index 7c01938c..6119655a 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1,5 +1,6 @@
 describe('jQuery', function () {
   it('should have jQuery', function () {
+    console.log(window.jQuery)
     if (!window.jQuery) {
       throw new Error('查看下 karma.conf.js 配置项 files 是否正确')
     }
@@ -32,5 +33,13 @@ describe('jQuery', function () {
 
   it('should able to request https://raw.githubusercontent.com/FE-star/exercise1/master/test/test.js', function (done) {
     // 使用 jQuery.ajax 请求 https://raw.githubusercontent.com/FE-star/exercise1/master/test/test.js，并验证是否拿到文件
+      jQuery.ajax({
+          url:'https://raw.githubusercontent.com/FE-star/exercise1/master/test/test.js',
+          method: 'GET',
+          success:function () {
+              done()
+          }
+      })
+      console.log('test')
   })
 })
\ No newline at end of file