Java脚本正则表达式中的验证 [英] validation in java script regex

问题描述

想要一些在使用javascript验证的文本框中插入值的帮助，其中应插入字母，数字和某些特殊字符，例如
(\-)仅.
我曾经做过的是var re =/^ [a-zA-Z0-9] + $/;用于文本框
插入字母和数字.
并且以为var re =/^[a-zA-Z\0-9-].+$/;可以，但是相反
它需要所有特殊字符.也尝试使用
var re =/^[a-zA-Z\0-9-].+$/;和var re =/^ [a-z，A-Z，0-9，\-，\\\\]] * $/;这两个exp插入字母数字和-字符，但不插入\. \是一个元字符，因此也尝试使用\\，但是即使这样也不起作用.在表达式中var re =/^[a-zA-Z\0-9-].+$/;或var re =/^ [a-z，A-Z，0-9，\-，\\\\\] * $/;我只想要一个加\以及字母数字字符和-.
谢谢.

Hi,
Wanted some help with inserting values in a text box with javascript validation wherein it should insert letters, numbers and certain special characters like
(\ -) only.
What I used to do is var re = /^[a-zA-Z0-9]+$/; for the text box
which inserts letters and numbers.
and thought var re = /^[a-zA-Z\0-9-].+$/;would work but instead
it takes all special characters.Also tried using
var re = /^[a-zA-Z\0-9-].+$/; and var re = /^[a-z,A-Z,0-9,\-,\\\\]*$/; these two exp inserts alphanumeric and - characters but does not insert \. \ is a metacharacters itself hence also have tried using \\ but even this does not work. In exps var re = /^[a-zA-Z\0-9-].+$/; or var re = /^[a-z,A-Z,0-9,\-,\\\\]*$/; I just want is an added \ along with alphanumerics chars and -.
Thank You.

推荐答案

/;用于文本框
插入字母和数字.
和以为var re =/^ [a-zA-Z \ 0-9-].+

/; for the text box
which inserts letters and numbers.
and thought var re = /^[a-zA-Z\0-9-].+

/;可以，但是相反
它需要所有特殊字符.也尝试使用
var re =/^ [a-zA-Z \ 0-9-].+

/;would work but instead
it takes all special characters.Also tried using
var re = /^[a-zA-Z\0-9-].+

/;和var re =/^ [a-z，A-Z，0-9，\-，\\\\] *

/; and var re = /^[a-z,A-Z,0-9,\-,\\\\]*

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