JavaScript中密码的正则表达式

Question

我使用过aspx格式的正则表达式验证器。我使用过这种((?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*\W).{6,15})表达，效果很好。

我正在尝试在javascript中使用相同的表达式，但是为什么会失败呢？

使用javascript

var regularExpression  = ((?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*\W).{6,15})


if (regularExpression.test(newPassword)) {
    alert("Password must be at least 6 characters, not more than 15 characters, and must include at least one upper case letter, one lower case letter, one special character and one numeric digit.");
    return false;
} 

Answer 1

对于RegExp，您应该使用/而不是(

var regularExpression  = /(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*\W).{6,15}/;

if (regularExpression.test(newPassword)) {
    alert("Password must be at least 6 characters, not more than 15 characters, and must include at least one upper case letter, one lower case letter, one special character and one numeric digit.");
    return false;
}