javascript split text after x characters

ByAnurag batra October 4, 2022September 6, 2022

// =======( /.{4}/g  ) Replace number 4 number the any the number for cout the char 
// this will add space after each charactar  
// ========= (index % 40 == 36 ? '\n' : ' ') spose you have 100 characater thrn
//this line will add new line after each 40 character..


var replaced = str.replace(/.{4}/g, function (value, index) {
    return value + (index % 40 == 36 ? '\n' : ' ');
});

Here is what the above code is Doing:
1. The replace() method takes two arguments: a regular expression and a replacement string.
2. The regular expression is /.{4}/g. This means “match any four characters”.
3. The replacement string is a function. This function takes two arguments: the matched string and the index of the match.
4. The function returns the matched string, plus a space or a newline character.
5. The index % 40 == 36 part means “if the index is a multiple of 40, add a newline character; otherwise, add a space”.

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