正则表达式中的文字美元符号 [英] Literal dollar sign in a regular expression
问题描述
我正在使用加拿大(fr-CA)语言环境,并尝试执行以下操作:
I am working with Canada (fr-CA) locale and trying to do following:
var str = "<dataset >{1}</dataset>";
var temp = "<set Cost x = '1,8M $' />";
str = str.replace(/\{1\}/g, temp);
输出:
"<dataset ><set Cost x = '1,8M </dataset>" /></dataset>"
期望的输出:
"<dataset ><set Cost x = '1,8M $'" /></dataset>"
replace函数将'1,8M $'
中的$
'误认为是表达式,因此
在输出中重复.有任何想法/解决方法吗?谢谢您的时间.
replace function is misunderstanding $
' from '1,8M $'
as an expression and hence
repeating in the output. Any ideas/workaround? Thank you for your time.
推荐答案
$'
在使用JS正则表达式时在替换字符串中具有特殊含义:它将插入匹配的子字符串之后的字符串部分.要在替换字符串中获得文字美元符号,请使用$$
.
$'
has a special meaning in the replacement string when using JS regular expressions: it inserts the portion of the string that follows the matched substring. To get a literal dollar sign in the replacement string, use $$
.
请参见 https://developer.mozilla .org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/String/replace .
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