Javascript 在字符串的开头和结尾添加一个字符
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Add a character to the beginning and end of a string
提问by PepeFloyd
I am using a platform which uses a JavaScript-like syntax and allows to convert my values using regex.
我使用的平台使用类似 JavaScript 的语法并允许使用正则表达式转换我的值。
I need to add a single quote at the beginning and at the end of a string, the string will always have 9 characters.
我需要在字符串的开头和结尾添加一个单引号,该字符串将始终有 9 个字符。
I.e.:
IE:
123456789
should be converted to '123456789'
123456789
应该转换为 '123456789'
What expression should I use?
我应该使用什么表达?
回答by evan
You don't need a regular expression.
您不需要正则表达式。
str = "123456789";
str = "'" + str + "'";
回答by Michael Lynch
If its like Javascript you can do something like...
如果它像 Javascript 你可以做类似的事情......
var myString = "'" + oldString + "'";
Where oldString is your 123456789
哪里 oldString 是你的 123456789
回答by u3758939
Although this question was asked a little early, newly defined backticks
standard called Template Literalsfrom ES6 provides new possibility to solve this question with a simpler syntax:
虽然这个问题提早了一点,但ES6 中新定义的backticks
称为Template Literals 的标准提供了用更简单的语法解决这个问题的新可能性:
const str = '123456789';
const wrapped = `'${str}'`;
回答by Penny Liu
回答by andDaviD
You can use literal \
\'123456789\'.
您可以使用文字\
\'123456789\'。
回答by Elise Chant
Why not just coerce to a String type:
为什么不强制转换为 String 类型:
var strValue = String(123456789);