checkForStringInArray

https://stackoverflow.com/questions/18051339/checking-if-a-string-contains-any-part-of-an-array-element

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/ui-lightness/jquery-ui.css">
<span id="demo"></span>

JavaScript

var arr = [
    "cat dog mouse",
    "blue yellow green",
    "pizza burrito hamburger"
];

function isInString(needle, haystack) {
    return new RegExp('\\b' + needle + '\\b').test(haystack);
}

function checkForStringInArray(stringToFind, arr) {
		var inString = false;
    for(var i=0; i < arr.length; i++){ 
    		inString = isInString(stringToFind, arr[i]);
        if(inString) break;
    }
    return inString;
}

var inString = checkForStringInArray('pizz', arr);
if(inString === true)
document.getElementById("demo").innerHTML = "true";
else 
document.getElementById("demo").innerHTML = "false";