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Check values of loop to see if ANY match?

In ruby, I would do something like:
array = [1,2,3]
array.any? {|a| a == 1}
=> true
Although, instead of an array, I am going up against a hash
var shop_products = {"607":607};
I have a checkbox loop and I want to check against all currently checked boxes for when checkboxes are both checked and unchecked to then see if there is a matching value and disable/able and hide/show a button if so.
code: https://jsfiddle.net/mk879vu2/7/
As #Mark Meyer mentioned, some can help but is there a way to use this against a hash or an alt for hashes?
I tried this: https://jsfiddle.net/jq9sgp58/
Maybe I am using this wrong?
My issue right now is when a checkbox is unchecked, it sees that the value is the "correct" one, but it isn't displaying the button when I uncheck. I'm doing something wrong in the conditional somehow.
In the jsfiddle I have all of the inputs but I only want one of the buttons (of the 2) to appear when a record with specific parameters is checked (in the example this is value=607, this can be any amount but in the example I have it as 1 record/input). But when I uncheck and the 607 is left alone as the only checked input, it runs the hide/disable and not the show.
What is wrong with my code?

It sounds like you are looking for #array.some()
let a = [1,2,3]
console.log(a.some(n => n === 1)) // true
console.log(a.some(n => n === 4)) //false

https://jsfiddle.net/2kaegb59/
The .some seemed like the way to get it done but i couldn't get it to work with the hash. I'm sure it's possible. Although, I ended up just checking for an undefined through the hash instead of trying to match up the check value with the hash value and it is likely unnoticeably faster.
for (var check of checked_checkboxes_check) {
if (shop_products[check.value] === undefined) {
print_submit.hide().prop("disabled", true);
break;
} else {
print_submit.show().prop("disabled", false);
}
}

js shorthand if/else within echo

What am I doing wrong here? No matter what the value of response.count it always outputs the second condition... 'entries have'. I am familiar with doing this in php, but either I am overlooking something or it is different in js.
response.count is returning correct values...
if (response.success)
{
// show success message
$("#dtAlert").html('Success! \'<b>'+response.count+'</b>\' selected '+(response.count === 1 ? 'entry has' : 'entries have')+' been deleted from your account.');
}

Is the result 1 or "1"? The === operator compares the type of value. Try to change to ==.
See working here: http://jsfiddle.net/aLh4s/

If-statement never reaches the else part

I'm trying to change the text of a button with the following code.
// hide unavailable courses
$("#availability_button").click(function () {
$(".availability_red").toggle();
if ($(this).val('Show Unavailable')){
$(this).html('Hide Unavailable');
} else {
$(this).html('Show Unavailable');
}
});
The button text changes the first time I use it, but never again. Not sure why that is and I have pretty much hit the limits of my JS debugging knowledge.
I put an alert into it and proved it never reaches down to the else path.
What am i doing wrong?

It always evaluates to true because .val(val) returns the jQuery object and objects are truthy (ToBoolean gives true) values.
Also, you are using .val() whereas you probably want to check the .html()
Try this:
if ($(this).html() === 'Show Unavailable') {
$(this).html('Hide Unavailable');
} else {
$(this).html('Show Unavailable');
}
Demo http://jsfiddle.net/jfetf/

$(this).val("Show Unavailable") is setting the value and returning an object, it's not checking equality.
Try $(this).val() == "Show Unavailable" instead. It will take the current value and compare it to the string.

$(this).val('Show Unavailable') return jQuery object which is interprete as true.
Also $(this).val('Show Unavailable') set value to element...

If statement condition is met, but contents not executed?

I've got an two if() statements, for which the conditions are both met with the default values in the <select> and <input> form fields I've tested this by assigning the values to a variable and writing the variable. (0 and Url).
However, it seems that neither if() statement's contents execute properly.
Here's a link to my JSFiddle: http://jsfiddle.net/cfRAk/2/
Any edits/answers as to why this is happening would be greatly appreciated!

Change this line:
var geo_select_val = $('select[name=g_country\\[1\\]]').val();
To this:
var geo_select_val = parseInt($('select[name=g_country\\[1\\]]').val());
The thing is geo_select_val is actually "0" and not 0. Converting a string to boolean will only result in false if string is empty. "0" is not empty, so it was being evaluated as true. Since you are going !geo_select_val, it never goes in.
Caveat: this fix will only work if you make sure all values are numbers. If that's not the case, check for equality with "0"

Here's the code you're asking about:
$('#post-form').click( function() {
var geo_select_val = $('select[name=g_country\\[1\\]]').val();
if(!geo_select_val) {
var geo_url_val = $('input[name=g_url\\[1\\]]').val();
if(geo_url_val != "http://google.com") {
$('#notification').html("You need to enter a valid url");
}
}
});
When I set a breakpoint in this click function and then click on the Post Form div, geo_select_val comes back as "0" which means that if(!geo_select_val) will fail because geo_select_val does have a value so the first if condition will never be executed.
Perhaps you want the first if condition to be:
if (geo_select_val != "0") {
which will tell you if some other value besides the default has been selected (assuming you add other options to that select tag with different values).

If statement in jQuery plugin

I have a jQuery plugin with an if statement in it.
For some strange reason (probably it is just me screwing things up) it always gets in the else part even when the url's are the same.
if (opts.startUrl == track.permalink.url) {
var active = true;
} else {
alert('|'+opts.startUrl+'| |'+track.permalink_url+'|');
var active = false;
}
Check it out # http://dev.upcoming-djs.com

The surrounding code uses track.permalink_url, while the if block evaluates track.permalink.url (which is always undefined), so this condition:
opts.startUrl == track.permalink.url
Always evaluates to false
Update: as #brianpeiris points out, the correct fix here would be to change the condition to:
opts.startUrl == track.permalink_url

Start printing both the values and see what is the difference , otherwise do this
if (opts.startUrl.toLowerCase() == track.permalink.url.toLowerCase())