Find a word (not a character ) in a string?

Question

This is my JavaScript code :

var a = 'how are you';
if (a.indexOf('r') > -1) 
{
    alert('yes');
} 
else {
    alert('no');
}

This code alert('yes'). It only matches the character 'r' is present in the string or not. But I want to match a full word(like 'are') not a character. How I can do this?

If I understand it right you want to match "are" in "how are you" but not to match it in "gare du nord". If so you should improve your question to remove the confusion. — chiccodoro, Apr 17 '14 at 07:48

score 1 · Answer 1 · answered Apr 17 '14 at 07:30

Read MDS

str.indexOf(searchValue[, fromIndex])

searchValue

A string representing the value to search for.

fromIndex
The location within the calling string to start the search from. It can be any integer between 0 and the length of the string. The default value is 0.

So (a.indexOf('are') > -1) should work that will return 4 for a = 'how are you'.

score 0 · Answer 2 · edited Apr 17 '14 at 07:58

0

like this

var str = "how are you";
var n = str.search("are");

or do u want algorithm?

edited Apr 17 '14 at 07:58

Ashley Medway

7,151
7
49
71

answered Apr 17 '14 at 07:30

HOO

11
3

score 0 · Answer 3 · answered Apr 17 '14 at 07:39

0

You can also use a.search("are").

var a = 'how are you';
if (a.search('are') > -1) 
{
  alert('yes');
} 
else {
  alert('no');
}

answered Apr 17 '14 at 07:39

Mohiuddin Sohel

78
7

Find a word (not a character ) in a string?

3 Answers3

`str.indexOf(searchValue[, fromIndex])`