nodejs short if
Short-circuit Evaluation Shorthand When assigning a variable value to another variable, you may want to ensure that the source variable is not null, undefined, or empty. You can either write a long if statement with multiple conditionals, or use a short-,If condition is any of these, the result of the conditional expression will be the result of executing the expression exprIfFalse . A simple example: var age = 26; var ... , The Conditional Operator, is a shorthand for IF statements, it basically says: Assert if x > 0 . If so, assign 1. If not, assign -1. Or on a more general ..., You don't necessarily need jQuery. JavaScript alone will do this. var a = 2; var b = 3; var c = ((a < b) ? 'minor' : 'major');. The c variable will be ..., Ternary operator ?: used as inline if-else is right associative. In short this means that the rightmost ? gets fed first and it takes exactly one ... Node: a ? a : (b ? c; Nonterminal ? is read, re-applying the right-associativity rule., No, you can't do that unless you return a value. For example if your function had to return a value you could have written: return boolean ?, I've seen the short-circuiting behaviour of the && operator used to achieve this, although people who are not accustomed to this may find it hard ..., Automatic semicolon insertion has hit you. Your code is interpreted as var foo = bar: 123 }( !_.isNull(foo.bar)?foo.bar = true:"" );. which is a ..., dosomething() will only be called if x==2 is evaluated to true. This is called Short-circuiting. Using null is fine for one of the branches of a ternary expression. And a ternary expression is fine as a statement in Javascript., Using the ternary :? operator. var hasName = (name === 'true') ? 'Y' :'N';. The ternary operator lets us write shorthand if..else statements exactly ...
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 nodejs short if 相關參考資料
25+ JavaScript Shorthand Coding Techniques — SitePoint
Short-circuit Evaluation Shorthand When assigning a variable value to another variable, you may want to ensure that the source variable is not null, undefined, or empty. You can either write a long i... https://www.sitepoint.com Conditional (ternary) operator - JavaScript | MDN
If condition is any of these, the result of the conditional expression will be the result of executing the expression exprIfFalse . A simple example: var age = 26; var ... https://developer.mozilla.org Confused by shorthand syntax: x > 0 ? 1 : -1; - Stack Overflow
The Conditional Operator, is a shorthand for IF statements, it basically says: Assert if x > 0 . If so, assign 1. If not, assign -1. Or on a more general ... https://stackoverflow.com How to write an inline IF statement in JavaScript? - Stack Overflow
You don't necessarily need jQuery. JavaScript alone will do this. var a = 2; var b = 3; var c = ((a < b) ? 'minor' : 'major');. The c variable will be ... https://stackoverflow.com Javascript one line If...else...else if statement - Stack Overflow
Ternary operator ?: used as inline if-else is right associative. In short this means that the rightmost ? gets fed first and it takes exactly one ... Node: a ? a : (b ? c; Nonterminal ? is read, re-a... https://stackoverflow.com Javascript shorthand if-else and returning - Stack Overflow
No, you can't do that unless you return a value. For example if your function had to return a value you could have written: return boolean ? https://stackoverflow.com JavaScript single line 'if' statement - best syntax, this ...
I've seen the short-circuiting behaviour of the && operator used to achieve this, although people who are not accustomed to this may find it hard ... https://stackoverflow.com nodejs object declaration and immediate shorthand if statement ...
Automatic semicolon insertion has hit you. Your code is interpreted as var foo = bar: 123 }( !_.isNull(foo.bar)?foo.bar = true:"" );. which is a ... https://stackoverflow.com Omitting the second expression when using the if-else shorthand ...
dosomething() will only be called if x==2 is evaluated to true. This is called Short-circuiting. Using null is fine for one of the branches of a ternary expression. And a ternary expression is fine a... https://stackoverflow.com Shorthand for if-else statement - Stack Overflow
Using the ternary :? operator. var hasName = (name === 'true') ? 'Y' :'N';. The ternary operator lets us write shorthand if..else statements exactly ... https://stackoverflow.com |