javascript 删除点。从字符串的末尾开始签名
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Remove dot . sign from the end of the string
提问by Hasitha Shan
I have this requirement where it is required to remove only the last .
dot sign from a string.
我有这个要求,只需.
要从字符串中删除最后一个点符号。
Say if we have var str = 'abcd dhfjd.fhfjd.';
i need remove the final dot sign which would output abcd dhfjd.fhfjd
.
假设我们有 varstr = 'abcd dhfjd.fhfjd.';
我需要删除将输出的最后一个点符号abcd dhfjd.fhfjd
。
I found this link ( Javascript function to remove leading dot) which removes the first dot sign but I am new to this whole thing and could not find any source on how to remove a specific last character if exists.
我找到了这个链接(删除前导点的 Javascript 函数),它删除了第一个点符号,但我对整个事情很陌生,找不到任何关于如何删除特定最后一个字符(如果存在)的来源。
Thank you :)
谢谢 :)
回答by cookie monster
Single dot:
单点:
if (str[str.length-1] === ".")
str = str.slice(0,-1);
Multiple dots:
多个点:
while (str[str.length-1] === ".")
str = str.slice(0,-1);
Single dot, regex:
单点,正则表达式:
str = str.replace(/\.$/, "");
Multiple dots, regex:
多个点,正则表达式:
str = str.replace(/\.+$/, "");
回答by juminoz
if(str.lastIndexOf('.') === (str.length - 1)){
str = str.substring(0, str.length - 1);
}
回答by inspector-g
This will remove all trailing dots, and may be easier to understand for a beginner (compared to the other answers):
这将删除所有尾随点,对于初学者来说可能更容易理解(与其他答案相比):
while(str.charAt(str.length-1) == '.')
{
str = str.substr(0, str.length-1);
}