Question

我需要检查我的输入字符串是否只包含字母字符，星号，空格和制表符。

我试过这个，但它不起作用：

firstStr.matches(".*[a-zA-Z].*.*[\\t].*.*[\\s].*")

Answer 1

使用此正则表达式检查字符串是否仅包含字母，空格，星号，标签：

<select id="elements">
    {% for elem in elements %}
        <option value='{{ elem }}'>{{ elem }}</option>\n
    {% endfor %}
</select>

你很接近，但你需要一个单字符类。

Answer 2

我相信这应该有效：

[\\*\\t\\sa-zA-Z]+  //if you want to ensure that there is atleast 1 character in the string

[\\*\\t\\sa-zA-Z]*  //if it is ok to have 0 or more characters in the string

\\* will match an asterisk
\\t will match tab
\\s will match whitespace
a-zA-Z will match alphabetical chars
[...]+ ensures there are atleast one of the expression in the brackets
[...]* means there is 0 or more of the expression in the brackets

检查输入是否只包含某些字符

2 个答案: