JavaScript/jQuery - How to check if a string contain specific words

Question

$a = \'how are you\';
if (strpos($a,\'are\') !== false) {
    echo \'true\';
}

In PHP, we can use the code above to check if a string contain speci

Answer 1

An easy way to do it to use Regex match() method :-

For Example

var str ="Hi, Its stacks over flow and stackoverflow Rocks."

// It will check word from beginning to the end of the string

if(str.match(/(^|\W)stack($|\W)/)) {

        alert('Word Match');
}else {

        alert('Word not found');
}

Check the fiddle

NOTE: For adding case sensitiveness update the regex with /(^|\W)stack($|\W)/i

Thanks

Answer 2

You're looking for the indexOf function:

if (str.indexOf("are") >= 0){//Do stuff}

Answer 3

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
var check3 = str.includes("her");   //true
var check4 = str.includes("o",4);   //true, o is at position 4 (start at 0)
var check5 = str.includes("o",6);   //false o is not at position 6