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      17種正則表達(dá)式

      “^d+$”  //非負(fù)整數(shù)(正整數(shù) + 0)
      “^[0-9]*[1-9][0-9]*$”  //正整數(shù)
      “^((-d+)|(0+))$”  //非正整數(shù)(負(fù)整數(shù) + 0)
      “^-[0-9]*[1-9][0-9]*$”  //負(fù)整數(shù)
      “^-?d+$”    //整數(shù)
      “^d+(.d+)?$”  //非負(fù)浮點(diǎn)數(shù)(正浮點(diǎn)數(shù) + 0)
      “^(([0-9]+.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*.[0-9]+)|([0-9]*[1-9][0-9]*))$”  //正浮點(diǎn)數(shù)
      “^((-d+(.d+)?)|(0+(.0+)?))$”  //非正浮點(diǎn)數(shù)(負(fù)浮點(diǎn)數(shù) + 0)
      “^(-(([0-9]+.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*.[0-9]+)|([0-9]*[1-9][0-9]*)))$”  //負(fù)浮點(diǎn)數(shù)
      “^(-?d+)(.d+)?$”  //浮點(diǎn)數(shù)
      “^[A-Za-z]+$”  //由26個(gè)英文字母組成的字符串
      “^[A-Z]+$”  //由26個(gè)英文字母的大寫(xiě)組成的字符串
      “^[a-z]+$”  //由26個(gè)英文字母的小寫(xiě)組成的字符串
      “^[A-Za-z0-9]+$”  //由數(shù)字和26個(gè)英文字母組成的字符串
      “^w+$”  //由數(shù)字、26個(gè)英文字母或者下劃線(xiàn)組成的字符串
      “^[w-]+(.[w-]+)*@[w-]+(.[w-]+)+$”    //email地址
      “^[a-zA-z]+://(w+(-w+)*)(.(w+(-w+)*))*(?S*)?$”  //url

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