使用这一辛加税点是什么
div.card > div.name
这两者之间有何区别
div.card div.name
使用这一辛加税点是什么
div.card > div.name
这两者之间有何区别
div.card div.name
A > B
将只选B类直接儿童进入A类(即没有其他内容在外)。
<代码>A B将选择A内的任何B,即使其中还有其他内容。
审议两个假设情景:div >%20}
vs. div%20{>
此处,<代码> (space) 选择了所有<span>
、、>、div>、
内的内容,即使放在一个以上要素内。 <代码>> 选择了所有子女:<div>
要素,但如果不在另一要素范围之内的话。
探讨两个例子:
div > span {
color: #FFBA00 ;
}
<body>
<div>
<div>
<span>Hello...</span>
<p><span>Hello!</span></p>
</div>
<span>World!</span>
</div>
</body>
这只是选择了<代码><span>Hello...</span> (because it s Immediate after the nested div
tag, and <span>World!</span>
, and 它赢得对, 因为其并非在<>divcode/>上。
div span {
color: #0A0 ;
}
<body>
<div>
<div>
<span>Hello...</span>
<p><span>Hello!</span></p>
</div>
<span>World!</span>
</div>
</body>
即便是在其他标签内封顶的,也选择了所有各界。
div.card > div.name
matches <div class= card >....<div class= name >xxx</div>...</div>
but it doesn t match <div class= card >....<div class= foo > ... <div class= name >xxx</div>..</div>....</div>
<代码>div.card div. 姓名对两者都有对应关系。
That is, the >
selector makes sure that the selected element on the right side
of the >
is an immidiate child of the element on its left side.
The syntax without the >
对以下条目加以匹配:<div category= name >
的后代(而不仅仅是儿童)<div category=index >
。
A > B 选择B,如果是A的直接孩子,而AB选择B, 不管它是否是B的直接孩子。
<p> USING SPACE </p>
<style>
.a .b {
background-color: red;
}
</style>
<span class="a">
a
<br>
<span class="b"> a b</span>
<br>
<span class="c">
<span class="b"> a b c</span>
</span>
</span>
<br><br>
<p> USING GREATER THAN SIGN</p>
<style>
.x > .y {
background-color: red;
}
</style>
<span class="x">
x
<br>
<span class="y"> x y</span>
<br>
<span class="z">
<span class="y"> x y z</span>
</span>
</span>
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