Please enable Javascript to correctly display the contents on Dot Net Tricks!

How to find a string within a jQuery or javascript string

  Author : Shailendra Chauhan
Posted On : 13 Apr 2013
Total Views : 45,072   
 

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
}
This indexOf() method will return the position of the match, or -1 if it isn’t found.

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.



Free Interview Books
 
COMMENTS (0)
23 MAY
Xamarin Forms : Build Cross-platform Apps (Online)

09:00 PM-11:00 PM IST(+5.30 GMT)

Know More
5 MAY
ASP.NET MVC with Angular4 Development (Online)

06:30 AM-08:30 AM IST(+5.30 GMT)

Know More
29 APR
Xamarin Forms : Build Cross-platform Apps (Classroom)

5:00 PM-6:30 PM

Know More
29 APR
ASP.NET MVC with Angular2 Development (Classroom)

9:30 AM-11:00 AM

Know More
27 APR
ASP.NET Core Development (Online)

07:00 AM - 09:00 AM IST( TUS, THR)

Know More
22 APR
NodeJS Development (Classroom)

11:00 AM-12:30 PM

10 APR
Master Class ASP.NET MVC 5 with Angular2 Plus Angular4 Development (Online)

09:00 PM - 11:00 PM IST (M/W/F)

8 APR
MEAN Stack 2 Development (Classroom)

11:00 AM-12:30 PM

25 MAR
Xamarin Forms : Build Cross-platform Apps (Classroom)

8:00 AM-9:30AM

21 MAR
ASP.NET MVC with Angular2 Development (Online)

09:00 PM - 11:00 PM IST( TUS, THR, SAT)

25 FEB
ASP.NET MVC with Angular2 Development (Classroom)

03:30 PM-05:30 PM

24 FEB
Angular 2 with Type Script (Online)

09:00 PM-11:00 PM IST(Mon,Wed,Fri)

BROWSE BY CATEGORY
 
 
LIKE US ON FACEBOOK
 
+