如何使用以下条件进行验证?
How to make validation with the following conditions?
用户名:至少 5 个字母且全部小写
密码 : 是2位数字后跟符号“@”或符号“&”再后跟4个大写字母的组合
示例:
用户名:丸子/jungernaut
密码 : 21@YOUR / 74&GOOD
我试试
var slt = "gordonbam"
var sltk = "12@BANA"
var username = /[1-5][A-Z]/g;
var password = /[1-2](@|&)\w[1-4][A-Z]/g;
var result1 = slt.match(username);
var result2 = sltk.match(password);
console.log(result1);
console.log(result2);
也许,
^[0-9]{2}[@&][A-Z]{4}$
和
^[a-z]{5,}$
对于通行证和用户名可能工作正常。
如果您希望 simplify/modify/explore 表达式,regex101.com. If you'd like, you can also watch in this link 的右上面板已对其进行说明,它将如何与一些示例输入相匹配。
正则表达式电路
jex.im 可视化正则表达式:
const regex = /^\d{2}[@&][A-Z]{4}$/gm;
const str = `21@YOUR
74&GOOD
74&aaaa
74&AAAz`;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
用户名:
^([a-z]*[a-z]){5}[a-z]*$
密码:
^[0-9]{2}[@][A-Z]{4}$
试试这个,如果有任何问题,请评论我
用户名:至少 5 个字母且全部小写 密码 : 是2位数字后跟符号“@”或符号“&”再后跟4个大写字母的组合
示例: 用户名:丸子/jungernaut 密码 : 21@YOUR / 74&GOOD
我试试
var slt = "gordonbam"
var sltk = "12@BANA"
var username = /[1-5][A-Z]/g;
var password = /[1-2](@|&)\w[1-4][A-Z]/g;
var result1 = slt.match(username);
var result2 = sltk.match(password);
console.log(result1);
console.log(result2);
也许,
^[0-9]{2}[@&][A-Z]{4}$
和
^[a-z]{5,}$
对于通行证和用户名可能工作正常。
如果您希望 simplify/modify/explore 表达式,regex101.com. If you'd like, you can also watch in this link 的右上面板已对其进行说明,它将如何与一些示例输入相匹配。
正则表达式电路
jex.im 可视化正则表达式:
const regex = /^\d{2}[@&][A-Z]{4}$/gm;
const str = `21@YOUR
74&GOOD
74&aaaa
74&AAAz`;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
用户名:
^([a-z]*[a-z]){5}[a-z]*$
密码:
^[0-9]{2}[@][A-Z]{4}$
试试这个,如果有任何问题,请评论我