Develop Reference

$(this).hide() hides containers it shouldn't

I have this little piece of code that filters through a list of results and hides the divs that don't match. I am writing this for a PhoneGap iOS application. It works fine on Android, but on iOS for some reason it hides the entire search field as well after typing a few characters, not just the results.
Any idea why? I've stripped it down to almost only the HTML code and jQuery and it's still happening. I tried commenting out the $(this).hide(); part and it stops hiding the search field, so I assume somehow that's the culprit, but I can't figure out why or how to fix this. Been at it for 10 hours straight. Any ideas? Maybe I can target the results some other way?
$('#box_search').keyup(function() {
var valThis = $(this).val().toLowerCase();
if (valThis == "") {
$('#listing-results > .listing_container').show();
} else {
$('#listing-results > .listing_container').each(function() {
var text = ($(this).find('.listing_results_text_name').text() + $(this).find('.listing_results_text_name').data("alt")).toLowerCase();
if (text.indexOf(valThis) >= 0) {
$(this).show();
} else {
$(this).hide();
}
});
};
});

obviously I cant see the html but sometimes it helps to clean the code and just change the logic slightly
var box_search = function(e){
var myIndex = $(this).val();
val = (!myIndex || myIndex==='')?false:myIndex;
if(!myIndex){
$('#listing-results > .listing_container').show();
return;
}
//
$('#listing-results > .listing_container').each(function() {
var text = $(this).find('.listing_results_text_name').text() +
$(this).find('.listing_results_text_name').data("alt")
text = (!text || text==='')?false:text;
text = text.toLowerCase();
if(text.indexOf(myIndex.toLowerCase()) >= 0){
$(this).show();
return;
}
$(this).hide();
});
} //end of function
$('.box_search').keyup(box_search);

How to show all list items again that were previously hidden by jQuery?

I have a search box that filters results and hides them if they don't match the filter:
$('#box_street').keyup(function() {
var valThis = $(this).val().toLowerCase();
if (valThis == "") {
$('#street__list > .list__item').show();
} else {
$('#street__list > .list__item').each(function() {
var text = ($(this).text() + $(this).data("alt")).toLowerCase();
if (text.indexOf(valThis) >= 0) {
$(this).show()
} else {
$(this).hide();
}
});
};
});
Now, I added a function that clear the search box with $('.search__filter').val(''); The problem is, once that runs the items that were previously hidden don't show again. The form input resets ok, but the items are still hidden.
How can I show them all again?

Once the search input is empty, all you have to do is trigger the keyup event, as you already have a condition that shows all the elements
$('#reset_button').on('click', function() {
$('.search__filter').val('');
// reset form ... then
$('#box_street').trigger('keyup');
// or you could do it yourself directly with :
// $('#street__list > .list__item').show();
});

Input is not detecting that it is empty if removing text with "ctrl + a + backspace"

I am doing some easy div filtering with jQuery and input field. It is working, however it is not detecting that it is empty if I remove input using " Ctrl + a + backspace ", in other words if I select all text and remove it. What causes this?
It is not reordering divs back to default if using the keyboard commands but is going back to normal if you backspace every character.
This is how I do it:
$('#brandSearch').keyup(function() {
var valThis = $(this).val().toLowerCase();
if (valThis.length == 0) {
$('.card').show();
} else {
$('.card').each(function() {
var text = $(this).text().toLowerCase();
(text.indexOf(valThis) >= 0) ? $(this).parent().show(): $(this).parent().hide();
});
};
});

Your if block that handles the empty string is not showing the same elements that the else block hides. The else block calls .parent() but the if block does not.
So the else case shows or hides the parent of each .card element, but the if case shows the .card elements themselves—without unhiding their parents. See my comments added to the code (I also reformatted the conditional expression in the else for clarity):
$('#brandSearch').keyup(function() {
var valThis = $(this).val().toLowerCase();
if (valThis.length == 0) {
// Show all of the .card elements
$('.card').show();
} else {
$('.card').each(function() {
var text = $(this).text().toLowerCase();
// Show or hide the *parent* of this .card element
text.indexOf(valThis) >= 0 ?
$(this).parent().show() :
$(this).parent().hide();
});
};
});
Since it sounds like the non-empty-string case is working correctly, it should just be a matter of adding .parent() in the if block so it matches the others:
$('#brandSearch').keyup(function() {
var valThis = $(this).val().toLowerCase();
if (valThis.length == 0) {
// Show the parent of each .card element
$('.card').parent().show();
} else {
// Show or hide the parent of each .card element
$('.card').each(function() {
var text = $(this).text().toLowerCase();
text.indexOf(valThis) >= 0 ?
$(this).parent().show() :
$(this).parent().hide();
});
};
});
This is the kind of situation where familiarity with your browser's debugging tools would pay off big time. The .show() or .hide() methods manipulate the DOM, and by using the DOM inspector you could easily see which elements are being hidden and shown.
In fact, as a learning exercise I recommend un-fixing the bug temporarily by going back to your original code, and then open the DOM inspector and see how it reveals the problem. While you're there, also try out the JavaScript debugger and other tools.
If you use Chrome, here's an introduction to the Chrome Developer Tools. Other browsers have similar tools and documentation for them.

It seems to be working just fine:
$('#brandSearch').keyup(function() {
var valThis = $(this).val().toLowerCase();
if (valThis.length == 0) {
$('.card').show();
console.log("input is empty");
} else {
console.log("input is not empty");
$('.card').each(function() {
var text = $(this).text().toLowerCase();
(text.indexOf(valThis) >= 0) ? $(this).parent().show(): $(this).parent().hide();
});
};
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="brandSearch">

Jquery once two options have been selected from select drop down list run code

I have 2 select drop down menus. I want to to add a class once a option has been selected from both menus.
$('#size').change(function(){
if ($(this).val() > 0 ) {
$('#pizza').addClass('pizzaImage');
}
});
$('#crust').change(function(){
if ($(this).val() > 0 ) {
$('#pizza').addClass('pizzaImage');
}
});
This is my code so far, it works when I select an option from one. Basically I want to put these together I just don't know the syntax to do so. I also tried this but no results.
var size = $('#size')
var crust = $('#crust')
function image () {
if ((crust).val > 0 && (size).val > 0) {
$('#pizza').addClass('pizzaImage');
}
}

var $selects = $('#size, #crust');
$selects.change(function(){
var bothSelected = this.value && $selects.not(this).val();
$("#pizza").toggleClass("pizzaImage", bothSelected);
});

I would start by adding a common class between the two, to make it easier to bind the function to both select elements at the same time. Maybe something like pizzaOptions. Then, you could do something like this:
$(".pizzaOptions").on("change", function(){
var sizeSelected = $("#size").val() !== "";
var crustSelected = $("#crust").val() !== "";
if(sizeSelected && crustSelected){
$('#pizza').addClass('pizzaImage');
}
});

Filter in DIV content

I have made this jsFiddle for searching/filtering the div content which I am getting from an XML response. But I have done it for one text box alone. Any one can help me in implementing for next three?
For example:
If I am typing pd001 it shows the first 2 rows and if I type paste it should reach and filter from the current visible list, not from the whole list.
Kindly help me out on this.

If I'm not wrong then you must be trying to do is that If I search 2 rows based on pd001 and put paste in the next textbox then it should filter only those 2 rows not the entire grid. And the same functionality for all the other textboxes. In fact you need dependencies b/w textboxes.
Try this:
$(".productid").filter(function () {
$(this).parent().hide();
return $(this).text().toLowerCase().indexOf(text0) != -1
}).parent().show();
$(".product:visible").filter(function () {
$(this).parent().hide();
return $(this).text().toLowerCase().indexOf(text1) != -1;
}).parent().show();
$(".quantity:visible").filter(function () {
$(this).parent().hide();
return $(this).text().toLowerCase().indexOf(text2) != -1;
}).parent().show();
$(".amount:visible").filter(function () {
$(this).parent().hide();
return $(this).text().toLowerCase().indexOf(text3) != -1;
}).parent().show();
Demo: http://jsfiddle.net/fbC6w/4/

You are filtering only one column to, it may help you
$("#searchone , #searchtwo ,#searchthree ,#searchfour").bind("keyup", function() {
var map = {
'.productid': $("#searchone").val().toLowerCase(),
'.product': $("#searchtwo").val().toLowerCase(),
'.quantity': $("#searchthree").val().toLowerCase(),
'.amount': $("#searchfour").val().toLowerCase()
};
$('div.new').each(function() {
$(this).hide();
});
$('div.new').each(function() {
var parent_div = this;
$.each(map, function(key, value) {
$(parent_div).find(key).filter(function() {
if ($(this).text().toLowerCase().indexOf(value.toString()) != -1 && value != '') {
$(parent_div).show();
}
});
});
});
});​