String Search in JavaScript: presence of chars and text inside

We are checking the presence of a sub string https:// inside a main string. We used if else condition checking to display a message based on the returned value. Here is the code.

var my_str="Welcome to https://www.plus2net.com"
var str="https://";
document.write (my_str.search(str));

if(my_str.search(str)==-1){
document.write(my_str.indexOf("Not Found inside string"));}
else{document.write("Found: the location of the sub string is ");
document.write (my_str.search(str));
}

WE can search for presence of a string inside a main string in client side JavaScript by using string.search function.

If the search string is found inside the main string then it will return the position or the index of the location of the string.

Note that the index of first letter is 0. If the string is not found inside the main string then it returns -1.
JavaScript String Reference Search & replace string in JavaScript Uppercase to lower case by toLowerCase() method

Subscribe to our YouTube Channel here

Narendran	13-03-2010
Superb