if str contains jquery
if (str.indexOf("Yes") >= 0)
//case insensitive version
if (str.toLowerCase().indexOf("yes") >= 0)if str contains jquery
if (str.indexOf("Yes") >= 0)
//case insensitive version
if (str.toLowerCase().indexOf("yes") >= 0)check for substring javascript
const string = "javascript";
const substring = "script";
console.log(string.includes(substring)); //truejavascript string contains
var string = "foo",
substring = "oo";
console.log(string.includes(substring));angular string contains
const string = "foo";
const substring = "oo";
console.log(string.includes(substring));javascript check if character exists in string
// With ES6 MDN docs .includes()
"FooBar".includes("oo"); // true
"FooBar".includes("foo"); // false
"FooBar".includes("oo", 2); // false (2 is the start position for the search)
// E: Not suported by IE - instead you can use the Tilde opperator ~ (Bitwise NOT) with .indexOf()
~"FooBar".indexOf("oo"); // -2
~"FooBar".indexOf("foo"); // 0
~"FooBar".indexOf("oo", 2); // 0 (parameter 2 is the start position for the search)
// Used with a number, the Tilde operator effective does ~N => -(N+1). Use it with double negation !! (Logical NOT) to convert the numbers in bools:
!!~"FooBar".indexOf("oo"); // true
!!~"FooBar".indexOf("foo"); // false
!!~"FooBar".indexOf("oo", 2); // falsejavascript string contains function
s = "Hello world";
console.log(s.includes("world"));Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
