nameArray = new Array("Bob", "Ben", "Don");
for (i = 0; i < nameArray.length; i++) {
re = new RegExp("\b(" + nameArray[i] + ")\b");
checkWord = re.test("Bob");
if (checkWord) {
alert("true");
} else {
alert("false");
}
}
It returned false 3 times. It should return true the first time the loop runs. I dont know what's my error. Can anyone help? Thanks.
You must use double escape since you are writing a string:
new RegExp("\\b(" + nameArray[i] + ")\\b");
You might want to look into what the pipe (|) means in regular expressions. No loop required:
var nameArray = new Array("Bob", "Ben", "Don");
var nameExpression = nameArray.join('|');
var re = new RegExp('\\b(' + nameExpression + ')\\b');
var checkWord = re.test('A string containing the word Bob in it.');
if (checkWord)
console.log('+');
else
console.log('-');
Also, you are not declaring your variables. You should declare variables with var or else you will generate global variables which is dangerous and considered bad style.
I think a regex like this will work
re = new RegExp("^" + nameArray[i] + "$");
