Javascript 正则表达式删除最后一个 / 如果它作为字符串中的最后一个字符存在
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Regex to remove last / if it exists as the last character in the string
提问by P.Brian.Mackey
I would like a regular expression or otherwise some method to remove the last character in a string if and only if that character is '/'. How can I do it?
我想要一个正则表达式或其他一些方法来删除字符串中的最后一个字符，当且仅当该字符是“/”时。我该怎么做？
回答by Rob W
string = string.replace(/\/$/, "");
$marks the end of a string. \/is a RegExp-escaped /. Combining both = Replace the /at the end of a line.
$标记字符串的结尾。\/是一个 RegExp 转义的/. 结合两者 =替换/行尾的 。
回答by Joe
Just to give an alternative:
只是提供一个替代方案：
var str="abc/";
str.substring(0, str.length - +(str.lastIndexOf('/')==str.length-1)); // abc
var str="aabb";
str.substring(0, str.length - +(str.lastIndexOf('/')==str.length-1)); // aabb
This plays off the fact the Number(true) === 1and Number(false) === 0
这不符合事实Number(true) === 1和Number(false) === 0
回答by Dennis
var str = //something;
if(str[str.length-1] === "/") {
str = str.substring(0, str.length-1);
}
回答by daiscog
var str = "example/";
str = str.replace(/\/$/, '');
回答by Larsenal
var t = "example/";
t.replace(/\/$/, ""));
回答by Chandrakant
This is not regex but could solve your problem
这不是正则表达式，但可以解决您的问题
var str = "abc/";
if(str.slice(-1) == "/"){
str = str.slice(0,-1)+ "";
}
回答by Metafr
$('#ssn1').keyup(function() {
var val = this.value.replace(/\D/g, '');
val = val.substr(0,9)
val = val.substr(0,3)+'-'+val.substr(3,2)+'-'+val.substr(5,4)
val = val.replace('--','').replace(/-$/g,'')
this.value = val;
});
