jQuery:选择菜单以显示和隐藏某些div元素 [英] Jquery: Select menu to show and hide certain div elements

问题描述

我正在寻找创建一个选择菜单，该菜单基于所选选项显示和隐藏某些div；像这样的东西:

I'm looking to create a select menu that shows and hide certain divs based on the selected option; something like this:

<select name="choose_colors" id="color_selector">
  <option value="select_color">Select color</option>
  <option value="red">Choose Red</option>
  <option value="blue">Choose Blue</option>
  <option value="green">Choose Green</option>
</select>

<div id="red_options" class="color_options">
  ...
</div>

<div id="blue_options" class="color_options">
  ...
</div>

<div id="green_options" class="color_options">
  ...
</div>

因此，如果使用者选择选择红色"，则将显示#red_options的div，并且将隐藏#blue_options和#green_options.

So if the use selects "Choose Red", then the div for #red_options will show, and the #blue_options and #green_options will hide.

如果用户返回到默认选项选择颜色"，则#red_options/#blue_options/#green div被隐藏.

If the user goes back to the default option "Select color", the #red_options/#blue_options/#green divs are hidden.

我该如何在Jquery中做到这一点?我以为会是这样:

How would I do that in Jquery? I thought it would be something like this:

<script>
  $(".color_options").hide();

  $('select[name="choose_colors"]').change(function () {
    if ("Select color") {
      $("#red_options").hide();
      $("#blue_options").hide();
      $("#green_options").hide();
    }
    if ("Red") {
      $("#red_options").show();
    }
    if ("Blue") {
      $("#blue_options").show();
    }
    if ("Green") {
      $("#green_options").show();
    }
  });
</script>

当然不能正常工作.有什么想法吗?

Of course that's not working correctly. Any ideas?

推荐答案

尝试一下:

$("#color_selector").change(function() {
  $(".color_options").hide();
  $("#" + $(this).val() + "_options").show();
}

这可以利用下拉值中的匹配项以及div的命名方式，例如red = red_options

This takes advantage of the matches in the drop down values and how you've named your divs, e.g. red = red_options

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