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大約有 2,000 項(xiàng)符合查詢結(jié)果 ,庫內(nèi)數(shù)據(jù)總量為 78,250 項(xiàng)。(搜索耗時(shí):0.0029秒)

341.JavaScript 使用switch語句替換串聯(lián)的if、else if語句

```javascript function myTest(val) { var answer = ""; // Only change code below this line switch (val){ case "bob": answer = "Marley"; break; case 42: answer = "The Answer"; break; case 1: answer = "There is no #1"; break; case 99: answer = "Missed me by this much!"; break; case 7: answer = "Ate Nin...

http://www.o2fo.com/chun5060/chun5060-dj2t24bh.html

342.JavaScript 直接在函數(shù)中返回boolean值

```javascript function isLess(a, b) { // Fix this code return a < b; } // Change these values to test isLess(10, 15); ```

http://www.o2fo.com/chun5060/chun5060-e57s24bi.html

343.JavaScript 對象操作

```javascript // 舉例 var ourDog = { "name": "Camper", "legs": 4, "tails": 1, "friends": ["everything!"] }; // Only change code below this line. var myDog = { "name": "Camper", "legs": 4, "tails": 1, "friends": ["everything!"] }; ```

http://www.o2fo.com/chun5060/chun5060-51eu24bj.html

344.JavaScript 使用點(diǎn)操作符.讀取對象屬性

```javascript // Setup var testObj = { "hat": "ballcap", "shirt": "jersey", "shoes": "cleats" }; // Only change code below this line var hatValue = testObj.hat;// Change this line var shirtValue = testObj.shirt;// Change this line ```

http://www.o2fo.com/chun5060/chun5060-127i24bk.html

345.JavaScript 使用[]讀取對象屬性

```javascript // Setup var testObj = { "an entree": "hamburger", "my side": "veggies", "the drink": "water" }; // Only change code below this line var entreeValue = testObj["an entree"]; // Change this line var drinkValue = testObj["the drink"];// Change this line ```

http://www.o2fo.com/chun5060/chun5060-hcmt24bl.html

346.JavaScript 使用變量訪問對象屬性

```javascript // Setup var testObj = { 12: "Namath", 16: "Montana", 19: "Unitas" }; // Only change code below this line; var playerNumber=16; // Change this Line var player = testObj[playerNumber]; // Change this Line ```

http://www.o2fo.com/chun5060/chun5060-xg4724bm.html

347.JavaScript 更新對象屬性

```javascript // 舉例 var ourDog = { "name": "Camper", "legs": 4, "tails": 1, "friends": ["everything!"] }; ourDog.name = "Happy Camper"; // Setup var myDog = { "name": "Coder", "legs": 4, "tails": 1, "friends": ["Free Code Camp Campers"] }; // Only change code below this line. myDog.name="Happy C...

http://www.o2fo.com/chun5060/chun5060-932f24bn.html

348.JavaScript 給對象添加屬性

```javascript // 舉例 var ourDog = { "name": "Camper", "legs": 4, "tails": 1, "friends": ["everything!"] }; ourDog.bark = "bow-wow"; // Setup var myDog = { "name": "Happy Coder", "legs": 4, "tails": 1, "friends": ["Free Code Camp Campers"] }; // Only change code below this line. myDog.bark="woof";...

http://www.o2fo.com/chun5060/chun5060-rpdq24bo.html

349.JavaScript 刪除對象屬性

```javascript // 舉例 var ourDog = { "name": "Camper", "legs": 4, "tails": 1, "friends": ["everything!"], "bark": "bow-wow" }; delete ourDog.bark; // Setup var myDog = { "name": "Happy Coder", "legs": 4, "tails": 1, "friends": ["Free Code Camp Campers"], "bark": "woof" }; // Only change code below...

http://www.o2fo.com/chun5060/chun5060-b2mj24bp.html

350.JavaScript JSON操作

```javascript var myMusic = [ { "artist": "Billy Joel", "title": "Piano Man", "release_year": 1973, "formats": [ "CS", "8T", "LP" ], "gold": true }, { "artist":"John", "title":"Piano Man", "release_year":1990, "formats":[ "CS", "8T", "LP" ], "gold": true }// Add record here ]; ```

http://www.o2fo.com/chun5060/chun5060-jl3624bq.html

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341.JavaScript 使用switch語句替換串聯(lián)的if、else if語句

```javascript function myTest(val) { var answer = ""; // Only change code below this line switch (val){ case "bob": answer = "Marley"; break; case 42: answer = "The Answer"; break; case 1: answer = "There is no #1"; break; case 99: answer = "Missed me by this much!"; break; case 7: answer = "Ate Nin...

http://www.o2fo.com/chun5060/chun5060-dj2t24bh.html

342.JavaScript 直接在函數(shù)中返回boolean值

```javascript function isLess(a, b) { // Fix this code return a < b; } // Change these values to test isLess(10, 15); ```

http://www.o2fo.com/chun5060/chun5060-e57s24bi.html

343.JavaScript 對象操作

```javascript // 舉例 var ourDog = { "name": "Camper", "legs": 4, "tails": 1, "friends": ["everything!"] }; // Only change code below this line. var myDog = { "name": "Camper", "legs": 4, "tails": 1, "friends": ["everything!"] }; ```

http://www.o2fo.com/chun5060/chun5060-51eu24bj.html

344.JavaScript 使用點(diǎn)操作符.讀取對象屬性

```javascript // Setup var testObj = { "hat": "ballcap", "shirt": "jersey", "shoes": "cleats" }; // Only change code below this line var hatValue = testObj.hat;// Change this line var shirtValue = testObj.shirt;// Change this line ```

http://www.o2fo.com/chun5060/chun5060-127i24bk.html

345.JavaScript 使用[]讀取對象屬性

```javascript // Setup var testObj = { "an entree": "hamburger", "my side": "veggies", "the drink": "water" }; // Only change code below this line var entreeValue = testObj["an entree"]; // Change this line var drinkValue = testObj["the drink"];// Change this line ```

http://www.o2fo.com/chun5060/chun5060-hcmt24bl.html

346.JavaScript 使用變量訪問對象屬性

```javascript // Setup var testObj = { 12: "Namath", 16: "Montana", 19: "Unitas" }; // Only change code below this line; var playerNumber=16; // Change this Line var player = testObj[playerNumber]; // Change this Line ```

http://www.o2fo.com/chun5060/chun5060-xg4724bm.html

347.JavaScript 更新對象屬性

```javascript // 舉例 var ourDog = { "name": "Camper", "legs": 4, "tails": 1, "friends": ["everything!"] }; ourDog.name = "Happy Camper"; // Setup var myDog = { "name": "Coder", "legs": 4, "tails": 1, "friends": ["Free Code Camp Campers"] }; // Only change code below this line. myDog.name="Happy C...

http://www.o2fo.com/chun5060/chun5060-932f24bn.html

348.JavaScript 給對象添加屬性

```javascript // 舉例 var ourDog = { "name": "Camper", "legs": 4, "tails": 1, "friends": ["everything!"] }; ourDog.bark = "bow-wow"; // Setup var myDog = { "name": "Happy Coder", "legs": 4, "tails": 1, "friends": ["Free Code Camp Campers"] }; // Only change code below this line. myDog.bark="woof";...

http://www.o2fo.com/chun5060/chun5060-rpdq24bo.html

349.JavaScript 刪除對象屬性

```javascript // 舉例 var ourDog = { "name": "Camper", "legs": 4, "tails": 1, "friends": ["everything!"], "bark": "bow-wow" }; delete ourDog.bark; // Setup var myDog = { "name": "Happy Coder", "legs": 4, "tails": 1, "friends": ["Free Code Camp Campers"], "bark": "woof" }; // Only change code below...

http://www.o2fo.com/chun5060/chun5060-b2mj24bp.html

350.JavaScript JSON操作

```javascript var myMusic = [ { "artist": "Billy Joel", "title": "Piano Man", "release_year": 1973, "formats": [ "CS", "8T", "LP" ], "gold": true }, { "artist":"John", "title":"Piano Man", "release_year":1990, "formats":[ "CS", "8T", "LP" ], "gold": true }// Add record here ]; ```

http://www.o2fo.com/chun5060/chun5060-jl3624bq.html

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