javascript switch string
The switch statement evaluates an expression. The value of the expression is then compared with the values of each case in the structure. If there is a match, the associated block of code is executed. The switch statement is often used together with a bre, JavaScript 遇到switch 語句會先執行指定的expression 語句，然後用執行expression 得到的值，去跟所有case 的值做比較，如果相等就執行 ..., You must compare an Object with an Object not a String with an Object. Here I compare an object with an Object : var string = "String #1"; ..., 程式碼： var n = '5'; switch(n) case 5: alert('執行case分支'); break; ... 由以上例子說明在switch中使用的是全等匹配模式，特別是數字與字串匹配的 ..., In JavaScript, you can even mix in definitions of strings into these case statements as well. var foo = 1; var output = 'Output: '; switch (foo) case ..., The reason you're seeing this behavior is that this within the each call is a String object instance, not a string primitive. JavaScript has both.,You can't do it in a switch unless you're doing full string matching; that's doing substring matching. (This isn't quite true, as Sean points out in the comments. , But for 3 , the result of the prompt is a string "3" , which is not strictly equal === to the number 3 . So we've got a dead code in case 3 ! The default ..., The JavaScript Switch statement makes complex decision logic easier to code. ... You can also evaluate strings with the switch statement:
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 javascript switch string 相關參考資料
JavaScript switch Statement - W3Schools
The switch statement evaluates an expression. The value of the expression is then compared with the values of each case in the structure. If there is a match, the associated block of code is executed.... https://www.w3schools.com JavaScript switch switch 用法- JavaScript (JS) 教學Tutorial
JavaScript 遇到switch 語句會先執行指定的expression 語句，然後用執行expression 得到的值，去跟所有case 的值做比較，如果相等就執行 ... https://www.fooish.com Javascript switch with string variable not working - Stack ...
You must compare an Object with an Object not a String with an Object. Here I compare an object with an Object : var string = "String #1"; ... https://stackoverflow.com JavaScript中switch判斷容易犯錯的一個細節| 程式前沿
程式碼： var n = '5'; switch(n) case 5: alert('執行case分支'); break; ... 由以上例子說明在switch中使用的是全等匹配模式，特別是數字與字串匹配的 ... https://codertw.com switch - JavaScript - MDN Web Docs - Mozilla
In JavaScript, you can even mix in definitions of strings into these case statements as well. var foo = 1; var output = 'Output: '; switch (foo) case ... https://developer.mozilla.org Switch case as string - Stack Overflow
The reason you're seeing this behavior is that this within the each call is a String object instance, not a string primitive. JavaScript has both. https://stackoverflow.com Switch statement for string matching in JavaScript - Stack ...
You can't do it in a switch unless you're doing full string matching; that's doing substring matching. (This isn't quite true, as Sean points out in the comments. https://stackoverflow.com The "switch" statement - JavaScript.info
But for 3 , the result of the prompt is a string "3" , which is not strictly equal === to the number 3 . So we've got a dead code in case 3 ! The default ... https://javascript.info The JavaScript Switch Statement (With Examples)
The JavaScript Switch statement makes complex decision logic easier to code. ... You can also evaluate strings with the switch statement: https://love2dev.com |