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...
if (frame) console.warn(frame); } else { console.warn(message); } }};onwarn类型: (warning: RollupLog, defaultHandler: (warning: string | RollupLog) => void) => void;一个函数,用于拦截警告信息。它与 onLog 非常相似,但只接收警告。如果调用默认处理程序,日志将被处理为警告。如果提供了...
if (error) { console.log(error, errorDesc); authContext.acquireTokenPopup( "https://graph.microsoft.com", null, // extraQueryParameters null, // claims function (errorDesc, token, error) { if (error) { console.log(error, errorDesc); } else { console.log(token); } } ); } else ...
binarytext: The default behavior is to encode thetextstring as UTF-8 binary bytes. If the text is already 8-bit encoded, you can disable this behavior by setting the flag totrue. padding: Shorthand for settingpaddingtop,paddingleft,paddingright, andpaddingbottom. ...
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There are some shorthand keys as well if you're into that whole brevity thing. moment().add(7, 'd'); KeyShorthand years y quarters Q months M weeks w days d hours h minutes m seconds s milliseconds ms If you want to add multiple different keys at the same time, you can pass th...
: Object): { [key: string]: Function } { res = res || {} // 遍历 fns 数组，生成一个 `key 为插槽名称，value 为函数` 的对象 for (let i = 0; i < fns.length; i++) { if (Array.isArray(fns[i])) { resolveScopedSlots(fns[i], res) } else { res[fns[i]...
* It's recommended to addconcurrentlytodevDependenciesas it's usually used for developing purposes. Please adjust the command if this doesn't apply in your case. Usage NoteTheconcurrentlycommand is also available under the shorthand aliasconc. ...
();// Create an example URLconsttestMe='https://www.google.com';// Use RegExp object's native test() functionif(tester.test(testMe)){alert('We have a correct URL');// This output will fire}else{alert('The URL is incorrect');}console.log(tester);// Outputs the actual expression...
译者:王二狗 博客:掘金、思否、知乎、简书、CSDN 点赞再看,养成习惯,你们的支持是我持续分享的最大动力 原文链接:sitepoint.com/shorthand三元操作符 使用三元操作符可以让你的if...else多行语句变成一行 简化前: const x = 20; let answer; if (x > 10) { answer = "greater than 10"; } else ...