regex to get the number from the end of a string

2018-07-01 04:32:10

我有一个像stringNumber变量的id，如下所示：example12我需要一些javascript正则表达式从字符串中提取12，“example”对于所有id都是不变的，只是数字会不同。

This regular expression matches numbers at the end of the string.

var matches = str.match(/d+$/);

It will return an Array with its 0 th element the match, if successful. Otherwise, it will return null .

Before accessing the 0 member, ensure the match was made.

if (matches) {
    number = matches[0];
}

jsFiddle.

If you must have it as a Number , you can use a function to convert it, such as parseInt() .

number = parseInt(number, 10);

RegEx:

var str = "example12";
parseInt(str.match(/d+$/)[0], 10);

String manipulation:

var str = "example12",
    prefix = "example";
parseInt(str.substring(prefix.length), 10);

链接地址: http://www.djcxy.com/p/86986.html