javascript how to search a string code example

Example 1: search in string array javascript

function searchStringInArray (str, strArray) {
    for (var j=0; j<strArray.length; j++) {
        if (strArray[j].match(str)) return j;
    }
    return -1;
}

Example 2: js string search

var str = "This is a test sentence";
var hasTest = str.includes("test");

if(hasTest == true){
	//do a thing 
}

Example 3: search inside a string javascript

var string = "Hello world!";
var n = string.search("w"); //now n equals 6