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You can also write numeric escape sequences using either octal or hexadecimal digits. An octal escape sequence takes one of the forms:<br /><br /> \d or \dd or \ddd<br />The escape sequence yields a code value that is the numeric value of the 1-, 2-, or 3-digit octal number following the backslash (\). Each d can be any digit in the range 0-7.<br /><br />A hexadecimal escape sequence takes one of the forms:<br /><br /> \xh or \xhh or ...<br />The escape sequence yields a code value that is the numeric value of the arbitrary-length hexadecimal number following the backslash (\). Each h can be any decimal digit 0-9, or any of the letters a-f or A-F. The letters represent the digit values 10-15, where either a or A has the value 10.<br />
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楼主
