Hexadecimal conversion <p> 10 hexadecimal <input id = "txt10a" onkeyup = "showNum16 (); "type =" text "/> hexadecimal <input id =" txt16a "type =" text "/> <br> hexadecimal <input id =" txt16b "onkeyup = "showNum10 (); "type =" text "/> 10-digit <input id =" txt10b "type =" text "/> </p> encoding and conversion <p> Number <input id = "txtNum1" onkeyup = "showChar (); "type =" text "value =" 22221 "/> character <input id =" txtChar1 "type =" text "value =" character "/> <br> character <input id = "txtChar2" onkeyup = "showCharNum (); "Type =" text "/> numbers <input id =" txtNum2 "type =" text "/> </p> <strong style =" color: blue; ">&# 22221; </strong> indicates the character encoding table <table style =" border-collapse: collapse; "border =" 2 "cellpadding =" 4 "> <tbody> <tr> <th> name </th> <th> range </th> <th> quantity </ th> <th> View </th> </tr> <td> Chinese characters </td> <td> 19968 ~ 40869 </td> <td> 20902 </td> <td> View </td> </tr> <td> common symbols, numbers, and characters </td> <td> 33 ~ 126 </td> <td> 94 </td> <td> View </td> </tr> <td> Number </td> <td> 48 ~ 57 </td> <td> 10 </td> <td> View </td> </tr> <td> uppercase letters </td> <td> 65 ~ 90 </td> <td> 26 </td> <td> View </td> </tr> <td> lowercase letter </td> <td> 97 ~ 122 </td> <td> 26 </td> <td> View </td> </tr> <td colspan = "4"> more references: encoding table </td> </tr> </tbody> </table> character: <input id = "txtBegin" type = "text"/> ~ <Input id = "txtEnd" type = "text"/> <input id = "btnQuery" onclick = "btnQuery_onclick (); "type =" button "value =" "/> A total of 0 uppercase and lowercase characters are being loaded... <p> <pre class = "code" id = "txtCharContent" style = "width: 600px; height: 300px; font-size: 30px; "> </textarea> </p>
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