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2. How to check whether a string contains a substring in JavaScript...

   stackoverflow.com/questions/1789945

   const substring = "oo"; console.log(string.includes(substring)); // true. String.prototype.includes is case-sensitive and is not supported by Internet Explorer without a polyfill. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found: var string = "foo";

3. How to tell if a string contains a certain character in...

   stackoverflow.com/questions/4444477

   ES6 contains inbuilt method (includes) in String's prototype, which can be used to check if string contains another string or not. var str = 'To be, or not to be, that is the question.'; console.log(str.includes('To be'));

4. javascript - How do I check if string contains substring ... -...

   stackoverflow.com/questions/3480771

   61. It's pretty late to write this answer, but I thought of including it anyhow. String.prototype now has a method includes which can check for substring. This method is case sensitive. var str = 'It was a good date'; console.log(str.includes('good')); // shows true. console.log(str.includes('Good')); // shows false.

5. Fastest way to check a string contain another substring in...

   stackoverflow.com/questions/5296268

   In ES6, the includes() method is used to determine whether one string may be found within another string, returning true or false as appropriate. var str = 'To be, or not to be, that is the question.'; console.log(str.includes('To be')); // true. console.log(str.includes('question')); // true.

6. javascript - How to count string occurrence in string ... - Stack...

   stackoverflow.com/questions/4009756

   5. A simple way would be to split the string on the required word, the word for which we want to calculate the number of occurences, and subtract 1 from the number of parts: function checkOccurences(string, word) {. return string.split(word).length - 1;

7. javascript - How to check if a string contain specific words? -...

   stackoverflow.com/questions/5388429

   In javascript the includes () method can be used to determines whether a string contains particular word (or characters at specified position). Its case sensitive. var str = "Hello there."; var check1 = str.includes("there"); //true. var check2 = str.includes("There"); //false, the method is case sensitive.

8. How to check if a string contains text from an array of...

   stackoverflow.com/questions/5582574

   const str = 'abc'; const found = arrayOfStrings.find(v => (str === v)); Here, found would be set to 'abc' in this case. This will work for exact string matches. If instead you use: const found = arrayOfStrings.find(v => str.includes(v)); Once again, found would be set to 'abc' in this case.

9. Determine if string is in list in JavaScript - Stack Overflow

   stackoverflow.com/questions/2430000

   Modifying object prototypes in JavaScript can lead to serious bugs. You need to decide whether doing so is safe in your own environment. Of primary note is that iterating an array (when Array.prototype has added properties) with for ... in will return the new function name as one of the keys:

10. Check if a string contains any element of an array in JavaScript

    stackoverflow.com/questions/37428338

    You can use some() function: to check if a string contains any element of an array. e.g. var fruitsArr = ['banana', 'monkey banana', 'apple', 'kiwi', 'orange']; var myString = "I have an apple and a watermelon."; var stringIncludesFruit = fruitsArr.some(fruit => myString.includes(fruit)); This function is pretty new.

11. How to find if an array contains a specific string in...

    stackoverflow.com/questions/6116474

    This answer has been awarded bounties worth 500 reputation by Community. You really don't need jQuery for this. var myarr = ["I", "like", "turtles"]; var arraycontainsturtles = (myarr.indexOf("turtles") > -1); Hint: indexOf returns a number, representing the position where the specified searchvalue occurs for the first time, or -1 if it never ...