Question

In Javascript is it possible to check whether a string occurs in an array by using the “in” operator?

For eg:

    var moveAnims   = new Array("fly", "wipe", "flip", "cube");

    alert("wipe" in moveAnims);
    alert("fly " in moveAnims);
    alert("fly" in moveAnims);
    alert("Cube" in moveAnims);

Or is the ONLY way to do it iteratively?

var moveAnims   = new Array("fly", "wipe", "flip", "cube");
var targets     = new Array("wipe", "fly ", "fly", "Cube");

for (var i=0; i<moveAnims.length; i++)
{
    for (var j=0; j<targets.length; j++)
        if (targets[j] == moveAnims[i])
            alert("Found "+targets[j]);
}

Answer 1

You should be able to use .indexOf() to get the position of the object. Check whether it’s -1 to see if it’s not there.