From f3a2ac975017eeb6020d67a8403fc7dddfde4a87 Mon Sep 17 00:00:00 2001 From: evilrescuer Date: Wed, 20 Mar 2019 21:45:37 +1100 Subject: [PATCH 1/2] pass test --- package-lock.json | 250 ++++++++++++++++++++++++++++++++++++++++++++++ package.json | 1 + test/test.js | 14 ++- 3 files changed, 261 insertions(+), 4 deletions(-) create mode 100644 package-lock.json diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..a259825 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,250 @@ +{ + "name": "exercise4", + "version": "0.0.1", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "balanced-match": { + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz", + "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=", + "dev": true + }, + "brace-expansion": { + "version": "1.1.11", + "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz", + "integrity": 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+ "dev": true, + "requires": { + "has-flag": "^3.0.0" + } + }, + "wrappy": { + "version": "1.0.2", + "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz", + "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=", + "dev": true + } + } +} diff --git a/package.json b/package.json index dcdf033..09bc403 100644 --- a/package.json +++ b/package.json @@ -20,6 +20,7 @@ }, "homepage": "https://github.com/FE-star/exercise4#readme", "devDependencies": { + "mocha": "^5.2.0", "should": "^11.2.1" } } diff --git a/test/test.js b/test/test.js index 63a72e4..05441ea 100644 --- a/test/test.js +++ b/test/test.js @@ -4,7 +4,8 @@ describe('this', function () { say: function () { setTimeout(() => { // this 是什么？想想为什么？ - this.should.equal(null) + // answer: 隐含绑定（Implicit Binding） + this.should.equal(obj) done() }, 0) } @@ -15,7 +16,8 @@ describe('this', function () { it('global', function () { function test() { // this 是什么？想想为什么？ - this.should.equal(null) + // answer: 默认绑定（Default Binding） + this.should.equal(global) } test() }) @@ -26,7 +28,9 @@ describe('this', function () { say: function () { function _say() { // this 是什么？想想为什么？ - this.should.equal(null) + // answer: 1. 立即执行函数 -> 明确绑定了obj, 此时obj已经被声明提升，但还未赋值，是undefined + // 2. 而bind undefined，会把this绑定global + this.should.equal(global) } return _say.bind(obj) }() @@ -39,7 +43,9 @@ describe('this', function () { obj.say = function () { function _say() { // this 是什么？想想为什么？ - this.should.equal(null) + // answer: 1. 立即执行函数 -> 明确绑定了obj(this指向obj的地址，此时obj为{}), + // 2. obj.say()执行 -> 此时obj的值被改变(值为{ say: [Function: bound _say] }) + this.should.equal(obj) } return _say.bind(obj) }() From 2ed655dd9b22c5673f9c25ff75c9af6016f84661 Mon Sep 17 00:00:00 2001 From: evilrescuer Date: Wed, 20 Mar 2019 21:49:47 +1100 Subject: [PATCH 2/2] Migrated mocha to global --- package-lock.json | 188 ---------------------------------------------- package.json | 1 - 2 files changed, 189 deletions(-) diff --git a/package-lock.json b/package-lock.json index a259825..9a93599 100644 --- a/package-lock.json +++ b/package-lock.json @@ -4,179 +4,6 @@ "lockfileVersion": 1, "requires": true, "dependencies": { - "balanced-match": { - "version": "1.0.0", - "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz", - "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=", - "dev": true - }, - "brace-expansion": { - "version": "1.1.11", - "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz", - "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==", - "dev": true, - "requires": { - "balanced-match": "^1.0.0", - "concat-map": "0.0.1" - } - }, - "browser-stdout": { - "version": "1.3.1", - "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.1.tgz", - "integrity": "sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==", - "dev": true - }, - "commander": { - "version": "2.15.1", 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