Question

i have an array which contains some values. i want if the textbox’s value contains a value from any of the element of that array it will show alert “exists”, otherwise “doesn’t exists”
I have tried the following code:

$('[id$=txt_Email]').live('blur', function (e) {
    var email = $('[id$=txt_Email]').val();
    var array = ['gmail.com', 'yahoo.com'];
    if (array.indexOf(email) < 0) { // doesn't exist
        // do something
        alert('doesnot exists');
    }
    else { // does exist
        // do something else
        alert('exists');
    }

});

But this is comparing the whole value with the array’s element. i want to use contains function as we can in C# with string.Please help me.
I want if user type “[e-mail]” it will show exists in array. if user enter “[e-mail]” it will alert doesnot exists.

Answer 1

To find the match not exact string you need to do some thing like

Live Demo

arr = ['gmail.com', 'yahoo.com'];

alert(FindMatch(arr, 'gmail.co'));

function FindMatch(array, strToFind)
{

    for(i=0; i < array.length; i++)
    {
        if(array[i].indexOf( strToFind) != -1)
           return true;        
    }
     return false;
}
​