entityMap|blocks|key|44ce1|text|SET+"var="&for+/f+"delims=0123456789"+%25%25i+in+("%251")+do+set+var=%25%25i
if+defined+var+(echo+%251+NOT+numeric)+else+(echo+%251+numeric)|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|c4di2|替换|unstyled|762cb|使用|5r5jj|视情况而定^0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|L|9|@]|A|@]|B|$C|D]]|$2|E|4|F|6|G|8|M|9|@]|A|@]|B|$]]|$2|H|4|I|6|G|8|N|9|@]|A|@]|B|$]]|$2|J|4|K|6|G|8|O|9|@]|A|@]|B|$]]]]

<pre><code>SET "var="&amp;for /f "delims=0123456789" %%i in ("%1") do set var=%%i
if defined var (echo %1 NOT numeric) else (echo %1 numeric)
</code></pre>

Replace <code>%1</code> with <code>%yourvarname%</code> as appropriate

entityMap|blocks|key|1edi|text|对于|type|unstyled|depth|inlineStyleRanges|entityRanges|data|d40aj|(|1ulof|测试前导零|d5kdn|)：|8jmfc|echo(%25~1%7Cfindstr+"%5E[-][1-9][0-9]*$+%5E[1-9][0-9]*$+%5E0$">nul&&echo+numeric%7C%7Cecho+not+numeric|code-block|syntax|javascript^0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|N|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|O|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|P|9|@]|A|@]|B|$]]|$2|G|4|H|6|7|8|Q|9|@]|A|@]|B|$]]|$2|I|4|J|6|K|8|R|9|@]|A|@]|B|$L|M]]]]

for <code>± integers</code> (test also for leading zero):

<pre><code>echo(%~1|findstr "^[-][1-9][0-9]*$ ^[1-9][0-9]*$ ^0$"&gt;nul&amp;&amp;echo numeric||echo not numeric
</code></pre>

entityMap|blocks|key|74n3|text|你可以试试这个。例如，传递的变量是|type|unstyled|depth|inlineStyleRanges|entityRanges|data|77e4l|和|9huf1|等于|fob3l|..。|7orr1|set+/a+varCheck=%25var%25
if+%25varCheck%25+==+%25var%25+(goto+:confirmed)+else+(exit+/B)
exit+/B

:confirmed
::+You+can+use+%25var%25+here,+and+it+should+only+be+executed+if+it+is+numerical!|code-block|syntax|javascript|70pik|如果|21v8|等于例如|93lks|，那么它将设置|a1db2|要成为|d6m9h|，而且因为|6lg1|不等于|egi7t|，则退出批处理。|1c5e8|(第3行上的出口是为了防止if语句出于某种原因决定不执行...XD。)^0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|13|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|14|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|15|9|@]|A|@]|B|$]]|$2|G|4|H|6|7|8|16|9|@]|A|@]|B|$]]|$2|I|4|J|6|K|8|17|9|@]|A|@]|B|$L|M]]|$2|N|4|O|6|7|8|18|9|@]|A|@]|B|$]]|$2|P|4|Q|6|7|8|19|9|@]|A|@]|B|$]]|$2|R|4|S|6|7|8|1A|9|@]|A|@]|B|$]]|$2|T|4|U|6|7|8|1B|9|@]|A|@]|B|$]]|$2|V|4|W|6|7|8|1C|9|@]|A|@]|B|$]]|$2|X|4|Y|6|7|8|1D|9|@]|A|@]|B|$]]|$2|Z|4|10|6|7|8|1E|9|@]|A|@]|B|$]]|$2|11|4|12|6|7|8|1F|9|@]|A|@]|B|$]]]]

You could try this. The variable passed is for example <code>var</code> and <code>%var%</code> is equal to <code>500</code>.

<pre><code>set /a varCheck=%var%
if %varCheck% == %var% (goto :confirmed) else (exit /B)
exit /B

:confirmed
:: You can use %var% here, and it should only be executed if it is numerical!
</code></pre>

if <code>%var%</code> is equal to e.g. <code>a3453d</code>, then it would set <code>varCheck</code> to be <code>0</code>, and because <code>0</code> is not equal to <code>a3453d</code>, then it will exit batch processing.

(The exit on line 3 is just in case the if statement decides not to execute for some reason ... XD.)

entityMap|blocks|key|cetc5|text|@hornzach+-你是如此接近，并且比其他人的答案要简单得多。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|bpro5|要隐藏(至少是win7)中的错误消息，请将标准错误输出(2)重定向到nul+(一个特殊文件，它会悄悄丢弃输出的"bit-bucket")|945f8|set+/a+varCheck+=+%25var%25+2>nul|code-block|syntax|javascript|61ng4|然后剩下的答案适用于4个测试用例。|agup1|测试用例的完整答案：|4jb6p|call+:CheckNumeric+AA++"#NOT+A+VALID+NUMBER"
call+:CheckNumeric+A1++"#NOT+A+VALID+NUMBER"
call+:CheckNumeric+1A++"#NOT+A+VALID+NUMBER"

call+:CheckNumeric+11++"#A+VALID+NUMBER"

call+:CheckNumeric+1.23456789012345678901234567890.123456++"#NOT+A+VALID+NUMBER"
goto+:EOF

:CheckNumeric
@ECHO.

@ECHO+Test+%251
set+/a+num=%251+2>nul

if+{%25num%25}=={%251}+(
++++@ECHO+%251+#A+VALID+NUMBER,+Expected+%252
++++goto+:EOF
)

:INVALID
++++@ECHO+%251+#NOT+A+VALID+NUMBER,+Expected+%252|bovk9|输出：|4n1fn|Test+AA
AA+#NOT+A+VALID+NUMBER,+Expected+"#NOT+A+VALID+NUMBER"

Test+A1
A1+#NOT+A+VALID+NUMBER,+Expected+"#NOT+A+VALID+NUMBER"

Test+1A
1A+#NOT+A+VALID+NUMBER,+Expected+"#NOT+A+VALID+NUMBER"

Test+11
11+#A+VALID+NUMBER,+Expected+"#A+VALID+NUMBER"

Test+1.23456789012345678901234567890.123456
1.23456789012345678901234567890.123456+#NOT+A+VALID+NUMBER,+Expected+"#NOT+A+VALID+NUMBER"^0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|T|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|U|9|@]|A|@]|B|$]]|$2|E|4|F|6|G|8|V|9|@]|A|@]|B|$H|I]]|$2|J|4|K|6|7|8|W|9|@]|A|@]|B|$]]|$2|L|4|M|6|7|8|X|9|@]|A|@]|B|$]]|$2|N|4|O|6|G|8|Y|9|@]|A|@]|B|$H|I]]|$2|P|4|Q|6|7|8|Z|9|@]|A|@]|B|$]]|$2|R|4|S|6|G|8|10|9|@]|A|@]|B|$H|I]]]]

@hornzach - You were so close and with a much simpler answer than the rest.

To hide the error message in (win 7 at least) redirect to the standard error output (2) to nul (a special file, that quietly discards the output "bit-bucket")

<pre><code>set /a varCheck = %var% 2&gt;nul
</code></pre>

Then the rest of your answer works for the 4 test cases.

Full Answer With Test Cases:

<pre><code>call :CheckNumeric AA "#NOT A VALID NUMBER"
call :CheckNumeric A1 "#NOT A VALID NUMBER"
call :CheckNumeric 1A "#NOT A VALID NUMBER"

call :CheckNumeric 11 "#A VALID NUMBER"

call :CheckNumeric 1.23456789012345678901234567890.123456 "#NOT A VALID NUMBER"
goto :EOF

:CheckNumeric
@ECHO.

@ECHO Test %1
set /a num=%1 2&gt;nul

if {%num%}=={%1} (
 @ECHO %1 #A VALID NUMBER, Expected %2
 goto :EOF
)

:INVALID
 @ECHO %1 #NOT A VALID NUMBER, Expected %2
</code></pre>

Outputs:

<pre><code>Test AA
AA #NOT A VALID NUMBER, Expected "#NOT A VALID NUMBER"

Test A1
A1 #NOT A VALID NUMBER, Expected "#NOT A VALID NUMBER"

Test 1A
1A #NOT A VALID NUMBER, Expected "#NOT A VALID NUMBER"

Test 11
11 #A VALID NUMBER, Expected "#A VALID NUMBER"

Test 1.23456789012345678901234567890.123456
1.23456789012345678901234567890.123456 #NOT A VALID NUMBER, Expected "#NOT A VALID NUMBER"
</code></pre>

entityMap|blocks|key|dbcvv|text|对于正整数，最简单的方法应该是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|e58q0|IF+1%251+NEQ+%2B1%251+echo+Notnumeric!|code-block|syntax|javascript|8hfdi|如果还要考虑负数(连字符)，则可以这样做|89nna|SET+number=%251
if+1%251+EQU+%2B1%251+echo+positive+number
if+%251==-%25number:-=%25+echo+negative+number|epin6|从|d2t6d|这篇文章在这里^0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|P|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|Q|9|@]|A|@]|B|$F|G]]|$2|H|4|I|6|7|8|R|9|@]|A|@]|B|$]]|$2|J|4|K|6|E|8|S|9|@]|A|@]|B|$F|G]]|$2|L|4|M|6|7|8|T|9|@]|A|@]|B|$]]|$2|N|4|O|6|7|8|U|9|@]|A|@]|B|$]]]]

The easiest for positive integers should be:
<pre><code>IF 1%1 NEQ +1%1 echo Notnumeric!
</code></pre>
If negative numbers (hyphen) are also to be considered, this will work
<pre><code>SET number=%1
if 1%1 EQU +1%1 echo positive number
if %1==-%number:-=% echo negative number
</code></pre>
Learned from <a href="https://www.itprotoday.com/compute-engines/jsi-tip-9692-how-can-batch-script-determine-if-variable-or-parameter-integer" rel="nofollow noreferrer">this article here</a>

entityMap|blocks|key|3bgss|text|做与上面相同的事情。在特殊字符方面有问题。然而，解决方案是一种不同的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4aids|@echo+off
cls
setlocal+enabledelayedexpansion

if+"%251"==""+(goto:eof)+else+(set+_VAR2CHECK=%251)

for+/l+%25%25a+in+(0,1,9)+do+(
+++if+defined+_VAR2CHECK+(set+"_VAR2CHECK=!_VAR2CHECK:%25%25a=!")+else+(goto+:end)
)

:end
if+defined+_VAR2CHECK+(echo+%251+#NOT+A+VALID+NUMBER)+else+(echo+%251+#A+VALID+NUMBER)

set+"_VAR2CHECK="
endlocal|code-block|syntax|javascript|9tbjn|测试场景：|28g91|C:\>ISNUM+1A
1A++#NOT+A+VALID+NUMBER

C:\>ISNUM+11
11++#A+VALID+NUMBER^0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|L|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|M|9|@]|A|@]|B|$F|G]]|$2|H|4|I|6|7|8|N|9|@]|A|@]|B|$]]|$2|J|4|K|6|E|8|O|9|@]|A|@]|B|$F|G]]]]

Does the same thing as above. Have problems with special characters. However, the solution is of a different approach.

<pre><code>@echo off
cls
setlocal enabledelayedexpansion

if "%1"=="" (goto:eof) else (set _VAR2CHECK=%1)

for /l %%a in (0,1,9) do (
 if defined _VAR2CHECK (set "_VAR2CHECK=!_VAR2CHECK:%%a=!") else (goto :end)
)

:end
if defined _VAR2CHECK (echo %1 #NOT A VALID NUMBER) else (echo %1 #A VALID NUMBER)

set "_VAR2CHECK="
endlocal
</code></pre>

Test scenarions:

<pre><code>C:\&gt;ISNUM 1A
1A #NOT A VALID NUMBER

C:\&gt;ISNUM 11
11 #A VALID NUMBER
</code></pre>

entityMap|blocks|key|c1cjm|text|试着除以1，但它不适用于Z以外的数字(非相对整数或小数)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|49t8q|set+var=29
set+/a+number=%25var%25+>nul+2>&1
set+/a+number=%25number%25+/+1+>nul+2>&1
if+"%25var%25"+==+"%25number%25"+(echo+numeric)+else+(echo+NOT+numeric)|code-block|syntax|javascript^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|H|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|I|9|@]|A|@]|B|$F|G]]]]

Just try to divide per 1.
But it doesn't work with numbers out of Z (non relative integer or decimal).

<pre><code>set var=29
set /a number=%var% &gt;nul 2&gt;&amp;1
set /a number=%number% / 1 &gt;nul 2&gt;&amp;1
if "%var%" == "%number%" (echo numeric) else (echo NOT numeric)
</code></pre>

entityMap|blocks|key|dofnl|text|我使用这个函数代替，它似乎工作对我没有任何问题…|type|unstyled|depth|inlineStyleRanges|entityRanges|data|8s7bb|脚本(mytestscript.bat)|b8chr|REM+==+Script+variables+=============================================
SET+"NUMCODE=%251"
SET+"NAME=%252"

REM+==+Main+script+==================================================
CALL+:Validate+"NUMCODE"
IF+ERRORLEVEL+1+EXIT+/B+%25ERRORLEVEL%25
CALL+:Validate+"NAME"
IF+ERRORLEVEL+1+EXIT+/B+%25ERRORLEVEL%25

ECHO+Validation+Complete+and+all+variables+passed+validation.

REM+==+Functions+====================================================
:IsNumeric+[string-value]+[return-val]
++++SET+"stringVal=%25~1"
++++SET+/A+numericVal=%25stringVal%25+>+nul+2>+nul
++++IF+"%25stringVal%25"=="%25numericVal%25"+(SET+"%25~2=1")+ELSE+(SET+"%25~2=0")
++++EXIT+/B+0

:Validate
++++SET+PASSEDVALIDATION=0

++++ECHO+Validating+%25~1...

++++IF+"%25~1"=="NUMCODE"+(
++++++++ECHO+-+Value:+%25NUMCODE%25
++++++++IF+NOT+"%25NUMCODE%25"==""+SET+PASSEDVALIDATION=1
++++++++IF+"!PASSEDVALIDATION!"=="1"+(
++++++++++++CALL+:IsNumeric+%25NUMCODE%25+RETVAL
++++++++++++SET+PASSEDVALIDATION=!RETVAL!
++++++++)
++++++++IF+"!PASSEDVALIDATION!"=="1"+(
++++++++++++IF+NOT+%25NUMCODE%25+GEQ+1+SET+PASSEDVALIDATION=0
++++++++)
++++++++IF+"!PASSEDVALIDATION!"=="1"+(
++++++++++++IF+NOT+%25NUMCODE%25+LEQ+526+SET+PASSEDVALIDATION=0
++++++++)
++++++++IF+"!PASSEDVALIDATION!"=="0"+(
++++++++++++ECHO+-+The+first+parameter+is+invalid,+it+can+not+be+blank.
++++++++++++ECHO+-+Valid+value+is+a+number+from+1+to+526.
++++++++++++ECHO+-+Leading+zeros+are+not+valid.
++++++++)
++++)

++++IF+"%25~1"=="NAME"+(
++++++++ECHO+-+Value:+%25NAME%25
++++++++IF+NOT+"%25NAME%25"==""+SET+PASSEDVALIDATION=1
++++++++IF+"!PASSEDVALIDATION!"=="0"+(
++++++++++++ECHO+-+The+second+parameter+is+invalid,+it+can+not+be+blank.
++++++++)
++++)

++++IF+"!PASSEDVALIDATION!"=="0"+(
++++++++ECHO+-+Failed+validation.
++++++++EXIT+/B+1
++++)+ELSE+(
++++++++ECHO+-+Passed+validation.
++++)
++++EXIT+/B+0|code-block|syntax|javascript|cb6db|使用示例：|14ue7|C:\mytestscript.bat+10+MrTest
Validating+NUMCODE...
-+Value:+10
-+Passed+validation.

Validating+NAME...
-+Value:+MrTest
-+Passed+validation.

C:\mytestscript.bat+600
Validating+NUMCODE...
-+Value:+600
-+The+first+parameter+is+invalid,+it+can+not+be+blank.
-+Valid+value+is+a+number+from+1+to+526.
-+Leading+zeros+are+not+valid.
-+Failed+validation.

C:\mytestscript.bat+10
Validating+NUMCODE...
-+Value:+10
-+Passed+validation.

Validating+NAME...
-+Value:+
-+The+second+parameter+is+invalid,+it+can+not+be+blank.
-+Failed+validation.^0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|N|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|O|9|@]|A|@]|B|$]]|$2|E|4|F|6|G|8|P|9|@]|A|@]|B|$H|I]]|$2|J|4|K|6|7|8|Q|9|@]|A|@]|B|$]]|$2|L|4|M|6|G|8|R|9|@]|A|@]|B|$H|I]]]]

I use this function instead, it seems to work for me without any issues...

<h2>The Script (mytestscript.bat)</h2>

<pre><code>REM == Script variables =============================================
SET "NUMCODE=%1"
SET "NAME=%2"

REM == Main script ==================================================
CALL :Validate "NUMCODE"
IF ERRORLEVEL 1 EXIT /B %ERRORLEVEL%
CALL :Validate "NAME"
IF ERRORLEVEL 1 EXIT /B %ERRORLEVEL%

ECHO Validation Complete and all variables passed validation.

REM == Functions ====================================================
:IsNumeric [string-value] [return-val]
 SET "stringVal=%~1"
 SET /A numericVal=%stringVal% &gt; nul 2&gt; nul
 IF "%stringVal%"=="%numericVal%" (SET "%~2=1") ELSE (SET "%~2=0")
 EXIT /B 0

:Validate
 SET PASSEDVALIDATION=0

 ECHO Validating %~1...

 IF "%~1"=="NUMCODE" (
 ECHO - Value: %NUMCODE%
 IF NOT "%NUMCODE%"=="" SET PASSEDVALIDATION=1
 IF "!PASSEDVALIDATION!"=="1" (
 CALL :IsNumeric %NUMCODE% RETVAL
 SET PASSEDVALIDATION=!RETVAL!
 )
 IF "!PASSEDVALIDATION!"=="1" (
 IF NOT %NUMCODE% GEQ 1 SET PASSEDVALIDATION=0
 )
 IF "!PASSEDVALIDATION!"=="1" (
 IF NOT %NUMCODE% LEQ 526 SET PASSEDVALIDATION=0
 )
 IF "!PASSEDVALIDATION!"=="0" (
 ECHO - The first parameter is invalid, it can not be blank.
 ECHO - Valid value is a number from 1 to 526.
 ECHO - Leading zeros are not valid.
 )
 )

 IF "%~1"=="NAME" (
 ECHO - Value: %NAME%
 IF NOT "%NAME%"=="" SET PASSEDVALIDATION=1
 IF "!PASSEDVALIDATION!"=="0" (
 ECHO - The second parameter is invalid, it can not be blank.
 )
 )

 IF "!PASSEDVALIDATION!"=="0" (
 ECHO - Failed validation.
 EXIT /B 1
 ) ELSE (
 ECHO - Passed validation.
 )
 EXIT /B 0
</code></pre>

<h2>Usage Examples:</h2>

<pre><code>C:\mytestscript.bat 10 MrTest
Validating NUMCODE...
- Value: 10
- Passed validation.

Validating NAME...
- Value: MrTest
- Passed validation.

C:\mytestscript.bat 600
Validating NUMCODE...
- Value: 600
- The first parameter is invalid, it can not be blank.
- Valid value is a number from 1 to 526.
- Leading zeros are not valid.
- Failed validation.

C:\mytestscript.bat 10
Validating NUMCODE...
- Value: 10
- Passed validation.

Validating NAME...
- Value: 
- The second parameter is invalid, it can not be blank.
- Failed validation.
</code></pre>

entityMap|blocks|key|1bno|text|我使用了一种技术含量较低的方法。它只适用于整数，并且支持负值。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|dj4v4|set+"XVALUE=%25~1"
set+/A+XVALUE=XVALUE
if+"%25XVALUE%25"+NEQ+"%25~1"+goto+:invalid_value|code-block|syntax|javascript|7rt19|第一行获取命令行参数并将其放入XVALUE中。使用“引号”可防止出现带有各种特殊字符的问题。|54cd4|第二行看起来很神秘，但利用了这一点，当设置/A的等号右侧有一个文本字符串时，它被解释为包含数值的环境变量。命令处理器解析假定的数值，而不生成任何错误消息，也不设置ERRORLEVEL。这样做总是会导致XVALUE被转换为有效的数值，而不管传递给我们的是什么。|6fh4t|第三行是可选的，只有当您希望严格限制参数是-2147483648到2147483647范围内的数值时，才需要第三行。如果您不使用|caqff|然后测试|94fqg|您可以通过为八进制和十六进制数字加上前缀0或0x来获得对它们的支持。|7bsvf|如果有人使用非常小或很大的数字，比如-9999999999999或9999999999999，那么XVALUE将被设置为允许的最小值或最大值，即-2147483648和2147483647。|5hi94|如果有人使用垃圾，比如单词"hello“，那么XVALUE被设置为0。如果它类似于123x456，那么解析器在"x“处停止，XVALUE被设置为123。^0|0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|V|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|W|9|@]|A|@]|B|$F|G]]|$2|H|4|I|6|7|8|X|9|@]|A|@]|B|$]]|$2|J|4|K|6|7|8|Y|9|@]|A|@]|B|$]]|$2|L|4|M|6|7|8|Z|9|@]|A|@]|B|$]]|$2|N|4|O|6|7|8|10|9|@]|A|@]|B|$]]|$2|P|4|Q|6|7|8|11|9|@]|A|@]|B|$]]|$2|R|4|S|6|7|8|12|9|@]|A|@]|B|$]]|$2|T|4|U|6|7|8|13|9|@]|A|@]|B|$]]]]

I use a more low tech approach. It only works with integers and supports negative values.
<pre><code>set &quot;XVALUE=%~1&quot;
set /A XVALUE=XVALUE
if &quot;%XVALUE%&quot; NEQ &quot;%~1&quot; goto :invalid_value
</code></pre>
The first line gets the command line argument and drops it into XVALUE. Using the &quot;quotes&quot; prevents issues with various special characters.
The second line looks mysterious but takes advantage of that when there is a text string on the right hand side of the equals sign for SET /A that it's interpreted as an environment variable containing a numeric value. The command processor parses the presumed numeric value without generating any error messages nor setting ERRORLEVEL. Doing it this way always results in XVALUE being converted into a valid numeric value regardless of whatever was passed to us.
The third line is optional and is only needed if you want to be strict about that the argument is a numeric value in the range -2147483648 to 2147483647. If you don't use the <code>if</code> test then
<ul>
<li>You get support for octal and hexadecimal numbers by prefixing them with 0 or 0x.</li>
<li>If someone uses a very small or large number such as -9999999999999 or 9999999999999 then XVALUE will be set to the minimum or maximum allowed values which are -2147483648 and 2147483647.</li>
<li>If someone uses garbage such as the word &quot;hello&quot; then XVALUE is set to 0. If it's something like 123x456 then the parser stops at the &quot;x&quot; and XVALUE is set to 123.</li>
</ul>

entityMap|blocks|key|2urok|text|仅接受可用于检查的数值：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5el8g|set+test_var=001
(+
++(if+errorlevel+%25test_var%25+break+)+2>nul
)&&(
++echo+%25test_var%25+is+numeric
)%7C%7C(
++echo+%25test_var%25+is+NOT+numeric
)

set+test_var=001X
(+
++(if+errorlevel+%25test_var%25+break+)+2>nul
)&&(
++echo+%25test_var%25+is+numeric
)%7C%7C(
++echo+%25test_var%25+is+NOT+numeric
)|code-block|syntax|javascript|6bto2|第一次检查将通过，第二次检查不会通过。尽管上面的脚本不能处理一元|2kipq|-如果你也想处理这个案子-|7jkg2|isInteger.bat^0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|N|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|O|9|@]|A|@]|B|$F|G]]|$2|H|4|I|6|7|8|P|9|@]|A|@]|B|$]]|$2|J|4|K|6|7|8|Q|9|@]|A|@]|B|$]]|$2|L|4|M|6|7|8|R|9|@]|A|@]|B|$]]]]

<code>if errorlevel</code> accepts only numeric values which can be used for a checks:
<pre><code>set test_var=001
( 
 (if errorlevel %test_var% break ) 2&gt;nul
)&amp;&amp;(
 echo %test_var% is numeric
)||(
 echo %test_var% is NOT numeric
)

set test_var=001X
( 
 (if errorlevel %test_var% break ) 2&gt;nul
)&amp;&amp;(
 echo %test_var% is numeric
)||(
 echo %test_var% is NOT numeric
)
</code></pre>
the first check will pass, the second not.
Though the script above would not handle unary <code>+</code> - if you want to handle this case too check - <a href="https://github.com/npocmaka/batch.scripts/blob/master/math/isInteger.bat" rel="nofollow noreferrer">isInteger.bat</a>

I need to check if a parameter that is passed to a Windows Batch file is a numeric value or not. It would be good for the check to also works for variables.
I found an <a href="https://superuser.com/a/404359">answer</a> to a similar <a href="https://superuser.com/q/404338">question</a>, where the <code>findstr</code> command is used with a regular expression.
I did try that solution, but it’s not working like I hoped (at least on Windows 7).
My test scenarios are as follows:
<pre><code>AA # not a valid number
A1 # not a valid number
1A # not a valid number

11 # a valid number
</code></pre>

How to check if a parameter (or variable) is a number in a Batch script

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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 我需要检查传递给Windows批处理文件的参数是否为数字值。对于变量来说，检查也能起作用，这将是一件很好的事情。 我发现了一个 答案 到类似的 问题 ，其中 命令与正则表达式一起使用。 我确实尝试了这个解决方案，但它并不像我希望的那样工作(至少在Windows 7上是这样)。 我的测试场景如下： AA  # not a valid numberA1  # not a valid number1A

问如何检查批处理脚本中的参数(或变量)是否为数字
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