使用jQuery Show / Hide

Question

When select one as input want it to display .toggle, but it's only hiding it so far? Also this may be a long shot but how can I write this code so that I can use it again which I will be needing to instead of having to write new classes names.

Here's my code script:

$(function () {
if ($(".binary").val() == "0"){
 $( ".toggle" ).hide();
} else {
 $( ".toggle" ).show();
}
});

My html

<div class="option checkbox">
  <label class="field_wrap">
    <div class="label">Show Borders</div>
      <div class="field">
      <select class="binary tug" name="show_post_borders">
         <option value="0"></option>
         <option value="1"></option>
      </select>
    </div>
  </label>
</div> 

<div class="toggle">Filer</div>

Answer 1

Your Javascript only executes once when the page is loading. Based in your provided information I think what you really want to do is this:

$(function () {
  $(".binary").change(function() {
    if ($(this).val() == "0"){
      $( ".toggle" ).hide();
    } else {
      $( ".toggle" ).show();
    }
  });
});

The difference is that here you are setting up a function that will run every time a change-event occurs (= you changing your selection in the select box).

Answer 2

Try wrapping your function in a change handler, like so:

$(function () {
    $('.binary').change(function() {
        if ($(".binary").val() == "0"){
            $( ".toggle" ).hide();
        } else {
            $( ".toggle" ).show();
        }
});

Answer 3

Something like this should be what you're wanting to do: http://jsfiddle.net/BbXYt/

$(document).ready(function(){
    $(".binary").change(function(){
        if($(".binary").val() == "0"){
            $( ".toggle" ).hide();
        } else {
            $( ".toggle" ).show();
        }
    });

    $( ".toggle" ).hide();
});

HTML:

<div class="option checkbox">
  <label class="field_wrap">
    <div class="label">Show Borders</div>
      <div class="field">
      <select class="binary tug" name="show_post_borders">
         <option value="0">0</option>
         <option value="1">1</option>
      </select>
    </div>
  </label>
</div> 
<div class="toggle">Filer</div>

Answer 4

You mentioned you want reusable code. Try this:

$(function () {
    $(".toggle_field").change(function() {
        var field = $(this);
        if (field.val() == field.data("toggle-show-val")) {
            $(field.data("toggle-selector")).show();
        } else {
            $(field.data("toggle-selector")).hide();
        }
    });
});

HTML

<div class="option checkbox">
  <label class="field_wrap">
    <div class="label">Show Borders</div>
      <div class="field">
      <select class="binary tug toggle_field" data-toggle-selector=".toggle" data-toggle-show-val="1" name="show_post_borders">
         <option value="0"></option>
         <option value="1"></option>
      </select>
    </div>
  </label>
</div> 

<div class="toggle">Filer</div>

Fiddle: http://jsfiddle.net/qCeJ8/