How to find a string within a jQuery or javascript string

Sometimes, you required to find a the existence of a small string with in a string. This article will demonstarte, how could you do by using plain JavaScript.

First Method

//returns -1 if doesn't contains
if (str.indexOf("Hello") >= 0) 
{
 //string contains Hello
}
//OR
//For your are not sure about the case of the string
//returns -1 if doesn't contains
if (str.toLowerCase().indexOf("hello") >= 0)
{
 //string contains hello
}

Read More - jQuery Interview Questions and Answers

Second Method

//returns false if doesn't contains
if (/hello/i.test(str))
{
 //string contain Hello
}

What do you think?

I hope you will enjoy the tips while playing with JavaScript. I would like to have feedback from my blog readers. Your valuable feedback, question, or comments about this article are always welcome.