[英]javascript regex question
i want to check for certain regex expression to make sure some string is followed by '::' and some number. 我想检查某些正则表达式,以确保某些字符串后跟“ ::”和一些数字。 The number can be between 1 and 999999999999.
该数字可以在1到999999999999之间。
for example: 'ACME LOCK & KEY::42443' should pass where 'ABC Inc.' 例如:“ ACME LOCK&KEY :: 42443”应该通过“ ABC Inc.” should fail.
应该失败。
any help? 有什么帮助吗?
Try this: 尝试这个:
/::[1-9]\d{0,11}$/.test(str)
This will return true for every string that ends with ::
followed by an integer between 1 and 999999999999 inclusive. 对于以
::
结尾的所有字符串,其后为1到999999999999(含)之间的整数,它将返回true。
Here, this will match a string that ends in ::
followed by 1-12 digits. 在这里,这将匹配一个以
::
结尾的字符串,后跟1-12个数字。
/^.+::[1-9]\d{0,11}$/.test(stringToTest)
This also checks to make sure there is a string of at least 1 character prior to the ::
这也进行检查,以确保至少有1个字符之前的字符串
::
Tests: 测试:
FAIL: asdf
PASS: asdf::123
FAIL: asdf::
FAIL: asdf::0
PASS: asdf::999999999999
FAIL: asdf::9999999999999
FAIL: ::asdf
FAIL: ::999
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