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检查字符串的3个第一个字符

[英]Check the 3 first characters of a string

原文 2015-04-23 19:17:25 5 1 javascript/ regex

鉴于'052 ....'，我需要检查前两个字符是'05'而第三个是0到9之间但不是1.我试过：

var regex = /^[05]+[0,2-9]/;

1 个解决方案

差不多了：

var regex = /^05[02-9]/;

检查字符串中的特殊字符 - Check for special characters in string

检查字符串中的第一个字符 - Check First Char In String

检查第一个字符串 - Check First Character String

检查字符串中是否有相等数量的2个字符 - Check for equal quantity of 2 characters in string

检查字符串中的字符是否唯一 - Check for characters in a string being unique

检查字符串 Javascript 中的重复字符 - Check for repeated characters in a string Javascript

检查随机字符串中的字符范围 - Check for range of characters in a random string

如果前4个字符是数字，请检查4个数字和2个字母 - Check for 4 numbers and 2 letters if the first 4 characters are numbers

检查字符串是否在字符串中的任何位置包含1-3个.-_字符 - Check if string contains between 1 and 3 characters of .-_ anywhere in string

替换字符串开头和结尾的几个字符 - replace the few characters from first and last of string

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相关问题 检查字符串中的特殊字符 - Check for special characters in string 检查字符串中的第一个字符 - Check First Char In String 检查第一个字符串 - Check First Character String 检查字符串中是否有相等数量的2个字符 - Check for equal quantity of 2 characters in string 检查字符串中的字符是否唯一 - Check for characters in a string being unique 检查字符串 Javascript 中的重复字符 - Check for repeated characters in a string Javascript 检查随机字符串中的字符范围 - Check for range of characters in a random string 如果前4个字符是数字，请检查4个数字和2个字母 - Check for 4 numbers and 2 letters if the first 4 characters are numbers 检查字符串是否在字符串中的任何位置包含1-3个.-_字符 - Check if string contains between 1 and 3 characters of .-_ anywhere in string 替换字符串开头和结尾的几个字符 - replace the few characters from first and last of string

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