Función Trim() en JavaScript

function trim(inputString) {

   // Removes leading and trailing spaces from the passed string. Also removes

   // consecutive spaces and replaces it with one space. If something besides

   // a string is passed in (null, custom object, etc.) then return the input.

   if (typeof inputString != "string") { return inputString; }

   var retValue = inputString;

   var ch = retValue.substring(0, 1);

   while (ch == " ") { // Check for spaces at the beginning of the string

      retValue = retValue.substring(1, retValue.length);

      ch = retValue.substring(0, 1);

   }

   ch = retValue.substring(retValue.length-1, retValue.length);

   while (ch == " ") { // Check for spaces at the end of the string

      retValue = retValue.substring(0, retValue.length-1);

      ch = retValue.substring(retValue.length-1, retValue.length);

   }

   while (retValue.indexOf("  ") != -1) { // Note that there are two spaces in the string – look for multiple spaces within the string

      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); // Again, there are two spaces in each of the strings

   }

   return retValue; // Return the trimmed string back to the user

} //

 

 

About omaracostacasas

ING SOFTWARE
This entry was posted in Java Script. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s