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const string = "foo";
const substring = "oo";
console.log(string.includes(substring)); // true
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Like this:
if (str.indexOf("Yes") >= 0)
or you can use the tilde operator:
if (~str.indexOf("Yes"))
This works because indexOf() returns -1 if the string wasn't found at all.
Note that this is case-sensitive.
If you want a case-insensitive search, you can write
if (str.toLowerCase().indexOf("yes") >= 0)
Or:
if (/yes/i.test(str))
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<?php
if (str_contains('abc', '')) {
echo "Checking the existence of the empty string will always return true";
}
?>
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single = "a"
many = "aaaaaaaa"
print(single in many)
#True since a is in aaaaaaaa
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# User input
main_string = input("Enter the main string: ")
substring = input("Enter the substring to search for: ")
# Check if substring is present in the main string
if substring in main_string:
print("Substring found in the main string!")
else:
print("Substring not found.")