在JavaScript中转义序列
[英]Escape sequences in javascript
问题描述
I know that there are escape sequences like \\n \\b etc in javascript as like in other programming languages. 
我知道像其他编程语言一样，javascript中也有\\ n \\ b等转义序列。
alert(\\j)=>alerts j ...So what is the role of \\ here?.Which character is escaped?Is it null character? alert（\\ j）=> alert j ...那么\\ here的作用是什么？。哪个字符被转义？是否为空字符？
2 个解决方案
解决方案1
2 2012-02-27 19:03:10
None. 没有。 \\j isn't a recognized escape, so the escaping is ignored and "j" is used instead. \\j不是公认的转义符，因此忽略转义并使用“j”代替。
js> "\j"
"j"
解决方案2
1 已采纳 2012-02-27 19:06:42
Special characters in JavaScript Strings include ' , " , \\ , n , r , t , b , and f , as per JavaScript Special Characters w3schools . Because j is not a special character and \\ is (must itself be escaped to be displayed), it would make sense that the \\ is simply ignored. JavaScript字符串中的特殊字符包括' ， " ， \\ ， n ， r ， t ， b和f ，根据JavaScript特殊字符w3schools 。因为j 不是特殊字符而且是 \\ （必须将其自身转义才能显示），它将使意义上说， \\被简单地忽略。
\\ plays no role in "\\j" . \\在"\\j"中没有任何作用。
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