Question

How to check if a string contains a substring in JavaScript

Answer 1

var s = "javascript css php Html";

if (s.includes("php"))
    document.write("yes");
else
    document.write("no");


/*

run:

yes 

*/

 

70+ SQL courses for beginners and professionals

Answer 2

var s = "javascript css php Html";

if (s.indexOf("php") !== -1)
    document.write("yes");
else
    document.write("no");


/*

run:

yes 

*/

 

70+ SQL courses for beginners and professionals

Answer 3

var s = "javascript css php Html";

if (s.search("php"))
    document.write("yes");
else
    document.write("no");


/*

run:

yes 

*/

 

70+ SQL courses for beginners and professionals

Answer 4

var s = "javascript css php Html";

if (/php/.test(s))
    document.write("yes");
else
    document.write("no");


/*

run:

yes 

*/

 

70+ SQL courses for beginners and professionals