* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
3.9 KiB
3.9 KiB
id, title, challengeType, forumTopicId, dashedName
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
bad87fee1348bd9aed308826 | 使用 jQuery 选择元素的父元素 | 6 | 18321 | target-the-parent-of-an-element-using-jquery |
--description--
每个 HTML 标签都默认继承(inherits)
其父标签(parent element)
的 CSS 属性。
例如,h3
标签jQuery Playground
的父标签是<div class="container-fluid">
,<div class="container-fluid">
的父标签是body
。
jQuery 有一个parent()
方法,可以访问被选取标签的父标签。
下面的代码展示了使用parent()
方法把left-well
标签的父标签背景色设置成蓝色(blue)
的方式:
$("#left-well").parent().css("background-color", "blue")
请把#target1
标签的父标签背景色设置成红色(red)
。
--hints--
left-well
标签应该有红色的背景。
assert(
$('#left-well').css('background-color') === 'red' ||
$('#left-well').css('background-color') === 'rgb(255, 0, 0)' ||
$('#left-well').css('background-color').toLowerCase() === '#ff0000' ||
$('#left-well').css('background-color').toLowerCase() === '#f00'
);
应该用.parent()
方法修改该标签。
assert(code.match(/\.parent\s*\(\s*\)\s*\.css/g));
应该在#target1
标签上调用.parent()
方法。
assert(
code.match(/\$\s*?\(\s*?(?:'|")\s*?#target1\s*?(?:'|")\s*?\)\s*?\.parent/gi)
);
仅用 jQuery 给标签添加类。
assert(code.match(/<div class="well" id="left-well">/g));
--seed--
--seed-contents--
<script>
$(document).ready(function() {
$("#target1").css("color", "red");
$("#target1").prop("disabled", true);
$("#target4").remove();
$("#target2").appendTo("#right-well");
$("#target5").clone().appendTo("#left-well");
});
</script>
<!-- Only change code above this line -->
<body>
<div class="container-fluid">
<h3 class="text-primary text-center">jQuery Playground</h3>
<div class="row">
<div class="col-xs-6">
<h4>#left-well</h4>
<div class="well" id="left-well">
<button class="btn btn-default target" id="target1">#target1</button>
<button class="btn btn-default target" id="target2">#target2</button>
<button class="btn btn-default target" id="target3">#target3</button>
</div>
</div>
<div class="col-xs-6">
<h4>#right-well</h4>
<div class="well" id="right-well">
<button class="btn btn-default target" id="target4">#target4</button>
<button class="btn btn-default target" id="target5">#target5</button>
<button class="btn btn-default target" id="target6">#target6</button>
</div>
</div>
</div>
</div>
</body>
--solutions--
<script>
$(document).ready(function() {
$("#target1").css("color", "red");
$("#target1").prop("disabled", true);
$("#target4").remove();
$("#target2").appendTo("#right-well");
$("#target5").clone().appendTo("#left-well");
$("#target1").parent().css("background-color", "red");
});
</script>
<!-- Only change code above this line -->
<body>
<div class="container-fluid">
<h3 class="text-primary text-center">jQuery Playground</h3>
<div class="row">
<div class="col-xs-6">
<h4>#left-well</h4>
<div class="well" id="left-well">
<button class="btn btn-default target" id="target1">#target1</button>
<button class="btn btn-default target" id="target2">#target2</button>
<button class="btn btn-default target" id="target3">#target3</button>
</div>
</div>
<div class="col-xs-6">
<h4>#right-well</h4>
<div class="well" id="right-well">
<button class="btn btn-default target" id="target4">#target4</button>
<button class="btn btn-default target" id="target5">#target5</button>
<button class="btn btn-default target" id="target6">#target6</button>
</div>
</div>
</div>
</div>
</body>