[文本处理] [已解决]批处理如何实现在txt文本末尾插入特定内容，如果特定内容已存在则进行替换？

//&cls&cscript -nologo -e:jscript "%~f0" "1.txt"&pause&exit
function Add(i){return i<10?"0"+i:i;}
var now = new Date();
var dt = now.getFullYear()+Add((now.getMonth()+1))+
    Add(now.getDate())+
        Add(now.getHours())+
            Add(now.getMinutes());
var fso = new ActiveXObject('Scripting.Filesystemobject');
var file = WSH.Arguments(0);
var f = fso.OpenTextFile(file, 1);
var txt = f.ReadAll()+'\r\n';
var txt = /time=[^\r\n]+\s*$/.test(txt)?txt.replace(/(time=)[^\r\n]+\s*$/, '$1'+dt+'\r\n'):txt.replace(/[\r\n]*$/, '\r\n')+'time='+dt+'\r\n';
f.Close();
var f = fso.OpenTextFile(file, 2);
f.Write(txt);
f.Close();
WSH.echo('Done');
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@echo off
set now=%date:~-10,4%%date:~-5,2%%date:~-2%%time:~0,2%%time:~3,2%%time:~6,2%
echo time=%now%>>1.txt
pause
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@echo off
findstr "time=" "1.txt" >nul 2>&1 && goto :eof
for /f %%i in ('powershell -c "Get-Date -uformat '%%Y%%m%%d%%H%%M'"') do (
    set "Now=%%i"
)
>>"1.txt" echo time=%Now%
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set/a dat=%date:/=% 2>nul
set/a tim=%time::=% 2>nul
>>1.txt echo,%dat%%tim:~,-2%
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