I have the following string "item number:237728" I'm applying replace
我有以下字符串“项目编号:237728”我正在申请替换
str.replace(/[^0-9]/g,'');
but the string does not change, non digits are not removed. any idea why? thanks
但字符串不会更改,不会删除非数字。知道为什么吗?谢谢
2 个解决方案
#1
Are you assigning the returned value and using that, e.g. str = str.replace(/[^0-9]/g,'');, or expecting the original string to change?
您是否正在分配返回的值并使用它,例如str = str.replace(/ [^ 0-9] / g,'');或者期望原始字符串改变?
String functions don't modify the original string, they return the modified strings.
字符串函数不修改原始字符串,它们返回修改后的字符串。
#2
This worked, try pasting into the location box of your browser:
这很有效,尝试粘贴到浏览器的位置框中:
javascript:alert("item number:237728".replace(/[^0-9]/g,""))
As Neal says, I suspect your problem might be that of string mutability. Make sure you catch the return value from replace().
正如尼尔所说,我怀疑你的问题可能是字符串可变性。确保从replace()中捕获返回值。
#1
Are you assigning the returned value and using that, e.g. str = str.replace(/[^0-9]/g,'');, or expecting the original string to change?
您是否正在分配返回的值并使用它,例如str = str.replace(/ [^ 0-9] / g,'');或者期望原始字符串改变?
String functions don't modify the original string, they return the modified strings.
字符串函数不修改原始字符串,它们返回修改后的字符串。
#2
This worked, try pasting into the location box of your browser:
这很有效,尝试粘贴到浏览器的位置框中:
javascript:alert("item number:237728".replace(/[^0-9]/g,""))
As Neal says, I suspect your problem might be that of string mutability. Make sure you catch the return value from replace().
正如尼尔所说,我怀疑你的问题可能是字符串可变性。确保从replace()中捕获返回值。