String Manipulations through Javascript

[vivek kapile]

Title: String Manipulations through Javascript
Author: Vivek Kapile
Email: snipped
Language: JavaScript
Platform: Javascript
Technology: JavaScript
Level: Beginner

Introduction
This code will help for the beginners, who want to learn, how to manage a substring through Javascript.
for ex. @Right("Vivek", "i") returns "vek"


Description:

Below is a sample code.

function rightString(fullString, subString) {
   if (fullString.indexOf(subString) == -1) {
      return "";
   } else {
      return (fullString.substring(fullString.indexOf(subString)+subString.length, fullString.length));
   }
}


function rightBackString(fullString, subString) {
   if (fullString.lastIndexOf(subString) == -1) {
      return "";
   } else {
      return fullString.substring(fullString.lastIndexOf(subString)+1, fullString.length);
   }
}


function middleString(fullString, startString, endString) {
   if (fullString.indexOf(startString) == -1) {
      return "";
   } else {
      var sub = fullString.substring(fullString.indexOf(startString)+startString.length, fullString.length);
      if (sub.indexOf(endString) == -1) {
         return sub;
      } else {
         return (sub.substring(0, sub.indexOf(endString)));
      }
   }
}


function middleBackString(fullString, startString, endString) {
   if (fullString.lastIndexOf(startString) == -1) {
      return "";
   } else {
      var sub = fullString.substring(0, fullString.lastIndexOf(startString));
      if (sub.indexOf(endString) == -1) {
         return sub;
      } else {
         return (sub.substring(sub.indexOf(endString)+endString.length, sub.length));
      }
   }
}


function leftString(fullString, subString) {
   if (fullString.indexOf(subString) == -1) {
      return "";
   } else {
      return (fullString.substring(0, fullString.indexOf(subString)));
   }
}


function leftBackString(fullString, subString) {
   if (fullString.lastIndexOf(subString) == -1) {
      return "";
   } else {
      return fullString.substring(0, fullString.lastIndexOf(subString));
   }
}

Summary

There are many topics to learn with Javascript. I have covered a small portion hope this will helps all the beginners to start up. Please give your feedback and suggestion.

History

* Written on 17-March-2011, Thursday


References

License

This article, along with any associated source code and files, is licensed under The Bytes

About the Author

Vivek kapile
Developer
India,Bangalore