'jQuery check if value not in array

Tried to get this to work:

var instance_name = $('#instance_name').val();
$("#instance_name").on("blur", function(e){
    if (!~$.inArray(instance_name, not_allowed)) {
        $("#instance_alert").html("<font color=green>Instance does not exists. Please continue</font>");
    } else {
        $("#instance_alert").html("<font color=red>Instance exists. Please try another one.</font>");
    }

But to no avail.. (Looked into How to check if a value is NOT in an array using jQuery)

Any ideas why it still continues to say Please continue Kindly.

jqueryarrays


Solution 1:[1]

you can use this: please $.inArray

if(jQuery.inArray("test", not_allowed) != -1) {
    console.log("is in array");
} else {
    console.log("is NOT in array");
}

Solution 2:[2]

You can use indexOf() method. The indexOf() method searches the array for the specified item, and returns its position. It returns -1 if the item is not found.

var not_allowed = ["test", "noah", "help", "demo"];    
$("#instance_name").on("blur", function (e) {
    var instance_name = $(this).val();
    if (not_allowed.indexOf(instance_name) > -1) {
        $("#instance_alert").html("<font color=red>Instance exists. Please try another one.</font>");
    } else {
        $("#instance_alert").html("<font color=green>Instance does not exists. Please continue</font>");
    }
});

Solution 3:[3]

Late answer, but To check if a value IS NOT present in an array, you can use:

if(jQuery.inArray("item", the_array) === -1) {
    // item NOT in Array
}

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Angu
Solution 2
Solution 3

Related Questions