//Shorthand if (['abc', 'def', 'ghi', 'jkl'].includes(x)) { //logic } 2.如果为真…否则简写 这对于我们有if-else条件,里面不包含更大的逻辑时,是一个较大的捷径。我们可以简单的使用三元运算符来实现这个简写。 // Longhand let test: boolean; if (x > 100) { test = true; } else ...
1、单行 If-Else 语句(三元运算符) 这是许多编程语言的共同特征。你可以使用三元运算符用一行代码编写整个语句,而不是在多行上编写 if-else。例如: const age = 12; let ageGroup; // LONG FORM if (age > 18) { ageGroup = "An adult"; } else { ageGroup = "A child"; } // SHORTHAND ageG...
//Longhand if (value === 1 || value === 'one' || value === 2 || value === 'two') { // Execute some code } // Shorthand 1if ([1, 'one', 2, 'two'].indexOf(value) >= 0) { // Execute some code }// Shorthand 2if ([1, 'one', 2, 'two'].includes(value)) ...
三元表达式在if…else 中的赋值操作 const x = 20 let answer // 常规写法 if (x > 10) { answer = 'greater than 10' } else { answer = 'less than 10' } // 简写 const answer = x > 10 ? "greater than 10" : "less than 10"; // 也可以嵌套 const answer = x > 10 ? "greater...
// Longhandif(type==='test1'){test1();}elseif(type==='test2'){test2();}elseif(type==='test3'){test3();}elseif(type==='test4'){test4();}else{thrownewError('Invalid value '+type);}// Shorthandvartypes={test1:test1,test2:test2,test3:test3,test4:test4};varfunc=types[type...
如果使用if...else语句,那么这是一个很好节省代码的方式。 Longhand: const x = 20;let answer;if (x > 10) { answer = 'is greater'; } else { answer = 'is lesser'; } Shorthand: const answer = x > 10 ? 'is greater' : 'is lesser'; ...
eslint: object-shorthand jscs: requireEnhancedObjectLiterals // bad const atom = { value: 1, addValue: function (value) { return atom.value + value; }, }; // good const atom = { value: 1, // 对象的方法 addValue(value) { return atom.value + value; }, };...
msalInstance.acquireTokenPopup({scopes: ["User.Read"]// shorthand for https://graph.microsoft.com/User.Read}).then((response) =>{// do something with the auth response}).catch((error) =>{// handle errors}); 还可以使用 ES8 附带的 async/await 语法: ...
Set ecma to 2015 or greater to emit shorthand object properties - i.e.: {a} instead of {a: a}. The ecma option will only change the output in direct control of the beautifier. Non-compatible features in your input will still be output as is. For example: an ecma setting of 5 ...
// width of the dashed lineconst maxPlayerX = 2e3; // limit player offsetconst mountainCount = 30; // how many mountains are thereconst timeDelta = 1/60; // inverse frame rateconst PI = Math.PI; // shorthand for Math.PI// player settingsconst height = 150; // hig...