Javascript String operation package

Core code:
Copy codeThe Code is as follows:
/**
* Jscript. string package
* This package contains utility functions for working with strings.
*/
If (typeof jscript = 'undefined '){
Jscript = function (){}
}
Jscript. string = function (){}
/**
* This function searches a string for another string and returns a count
* Of how many times the second string appears in the first.
* (Returns the number of times a substring appears in a string)
* @ Param inStr The string to be searched.
* @ Param inSearchStr The string to search.
* @ Return The number of times inSearchStr appears in inStr,
* Or 0 if inStr or inSearchStr is null or a blank string.
*/
Jscript. string. substrCount = function (inStr, inSearchStr ){
If (inStr = null | inStr = "" |
InSearchStr = null | inSearchStr = ""){
Return 0;
}
Var splitChars = inStr. split (inSearchStr );
Return splitChars. length-1;
} // End substrCount ().
/**
* This function will take an input string and either strip any
* Character that appears in a given list of characters, or will strip any
* Character that does NOT appear in a given list of characters.
* (This function is used to block or retain characters in "inCharList", depending on the parameter "ipiporallow ")
* @ Param inStr The string to strip characters.
* @ Param inStripOrAllow Either the value "strip" or "allow ".
* @ Param inCharList This is either (a) the list of characters that
* Will be stripped from inStr (when required iporallow =
* "Strip"), or (B) the list of characters that will
* NOT be stripped from inStr (when required iporallow =
"Allow ".
* @ Return The value of inStr after characters have been
* Stripped as specified.
*/
Jscript. string. stripChars = function (inStr, inStripOrAllow, inCharList ){
If (inStr = null | inStr = "" |
InCharList = null | inCharList = "" |
InStripOrAllow = null | inStripOrAllow = ""){
Return "";
}
InStripOrAllow = inStripOrAllow. toLowerCase ();
Var outStr = "";
Var I;
Var j;
Var nextChar;
Var keepChar;
For (I = 0; I <inStr. length; I ++ ){
NextChar = inStr. substr (I, 1 );
If (inStripOrAllow = "allow "){
KeepChar = false;
} Else {
KeepChar = true;
}
For (j = 0; j <inCharList. length; j ++ ){
CheckChar = inCharList. substr (j, 1 );
If (inStripOrAllow = "allow" & nextChar = checkChar ){
KeepChar = true;
}
If (inStripOrAllow = "strip" & nextChar = checkChar ){
KeepChar = false;
}
}
If (keepChar = true ){
OutStr = outStr + nextChar;
}
}
Return outStr;
} // End stripChars ().
/**
* This function can check is a given string either only contains characters
* From a list, or does not contain any characters from a given list.
* (This function is used to determine whether the inString is a character in inCharList or to make the opposite judgment, depending on the inFromExcept parameter)
* @ Param inString The string to validate.
* @ Param inCharList A list of characters that is either (a) the only
* Characters allowed in inString (when infrom=t
* Is = "from_list") or (B) the only characters that
* Cannot appear in inString (when infrom=t is
* = "Not_from_list ").
* @ Param infrom=t When this is "from_list", then inString may only
* Contain characters from inCharList. When this is
* "Not_from_list", then inString can contain any character
* Optional t thos in inCharList.
* @ Return True if inString only contains valid characters,
* As listed in inCharList when infrom==
* "From_list", false if not, or true if inString does
* Not containt any of the characters listed in
* InCharList when infrom=t = "not_from_list ".
*/
Jscript. string. strContentValid = function (inString, inCharList, infromworkflow t ){
If (inString = null | inCharList = null | infrom=t = null |
InString = "" | inCharList = ""){
Return false;
}
Infromresponse T = infromresponse T. toLowerCase ();
Var I;
If (infrom=t = "from_list "){
For (I = 0; I <inString. length; I ++ ){
If (inCharList. indexOf (inString. charAt (I) =-1 ){
Return false;
}
}
Return true;
}
If (infrom=t = "not_from_list "){
For (I = 0; I <inString. length; I ++ ){
If (inCharList. indexOf (inString. charAt (I ))! =-1 ){
Return false;
}
}
Return true;
}
} // End strContentValid ().
/**
* This function replaces a given substring of a string (all occurances
* It to be more precise) with a specified new substring. The substrings
* Can of course be single characters.
* (This function replaces all inOld values in inSrc with inNew)
* @ Param inSrc The string to replace substring (s) in.
* @ Param inOld The substring to replace.
* @ Param inNew The new substring to insert.
* @ Return The value of inSrc with all occurances of inOld replaced
* With inNew.
*/
Jscript. string. replace = function (inSrc, inOld, inNew ){
If (inSrc = null | inSrc = "" | inOld = null | inOld = "" |
InNew = null | inNew = ""){
Return "";
}
While (inSrc. indexOf (inOld)>-1 ){
InSrc = inSrc. replace (inOld, inNew );
}
Return inSrc;
} // End replace ().
/**
* Function to trim whitespace from the beginning of a string.
* (Removes spaces from the left of the string)
* @ Param inStr The string to trim.
* @ Return The trimmed string, or null if null or a blank string was
* Passed in.
*/
Jscript. string. leftTrim = function (inStr ){
If (inStr = null | inStr = ""){
Return null;
}
Var j;
For (j = 0; inStr. charAt (j) = ""; j ++ ){}
Return inStr. substring (j, inStr. length );
} // End leftTrim ().
/**
* Function to trim whitespace from the end of a string.
* (Corresponding to the above function, the white space characters are removed from the right side of the string)
* @ Param inStr The string to trim.
* @ Return The trimmed string, or null if null or a blank string was
* Passed in.
*/
Jscript. string. rightTrim = function (inStr ){
If (inStr = null | inStr = ""){
Return null;
}
Var j;
For (j = inStr. length-1; inStr. charAt (j) = ""; j --){}
Return inStr. substring (0, j + 1 );
} // End rightTrim ().
/**
* Function to trim whitespace from both ends of a string.
*
* @ Param inStr The string to trim.
* @ Return The trimmed string, or null if null or a blank string was
* Passed in.
*/
Jscript. string. fullTrim = function (inStr ){
If (inStr = null | inStr = ""){
Return "";
}
InStr = this. leftTrim (inStr );
InStr = this. rightTrim (inStr );
Return inStr;
} // End fullTrim ().

Demo area:
SubstrCount ()-Count how many times the string "wo" appears in the string "How much wood wowould a woodchuck chuck if a woodchuck cocould chuck wood" (5) <br> stripChars ()-Strip the characters 'aeio 'from the string "Denny Crane is cool! ", Then strip all characters comment t 'denycranc' <br> strContentValid ()-Validate that the string" 12345 "only contains numbers (true ), and then that the string "abc123" does not contain the character B (false) <br> replace () -Replace "wood" with "metal" in the string "How much wood wocould a woodchuck chuck if a woodchuck cocould chuck wood" <br> leftTrim () -Trim leading spaces from the string "test" (will display length before (6) and after (4) <br> rightTrim () -Trim trailing spaces from the string "test" (will display length before (6) and after (4) <br> fullTrim () -Trim both leading and trailing spaces from the string "test" (will display length before (8) and after (4) <br> breakLine () -Break up the string "All work and no play makes Homer go crazy" into 10 character chunks <br>
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