当我把svg
个图像放在文本旁边,加上vertical-align: middle;
,它就会很好地对齐.然而,如果我在::after
伪元素中使用svg
,那么结果就不符合预期.
此外,当我单击文本删除其内容时,剩下的svg
个元素仍然保持其未对齐的位置:
代码如下:
document.getElementById('em1').addEventListener('click', e => {
(e.target || e.srcElement).innerText = '';
});
document.getElementById('em2').addEventListener('click', e => {
(e.target || e.srcElement).innerText = '';
});
document.getElementById('em3').addEventListener('click', e => {
(e.target || e.srcElement).innerText = '';
});
* {
vertical-align: middle;
}
div {
background-color: yellow;
}
em {
background-color: pink;
cursor: pointer;
font-size: 41px;
}
#em2::after, #em3::after {
content: url("data:image/svg+xml,%3Csvg%20width%3D%22110%22%20height%3D%2246%22%20viewBox%3D%220%200%20110%2046%22%20version%3D%221.1%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Cpath%20style%3D%22fill%3A%23f00%3Bstroke-width%3A0%22%20d%3D%22M%200%2C0%20H%20110%20V%2046%20H%200%20Z%22%20%2F%3E%3C%2Fsvg%3E");
}
#em3::after {
vertical-align: middle;
}
<div>
<em id="em1">text #1</em><svg width="110" height="46" viewBox="0 0 110 46"
version="1.1" xmlns="http://www.w3.org/2000/svg"><path
style="fill:#f00;stroke-width:0" d="M 0,0 H 110 V 46 H 0 Z" /></svg>
</div>
<hr>
<div>
<em id="em2">text #2</em>
</div>
<hr>
<div>
<em id="em3">text #3</em>
</div>
如何做到这一点,需要调整什么,为什么?为什么::after
个伪元素不能自动与其"父元素"对齐?