尝试使用 querySelectorAll 但失败
Tried to use querySelectorAll but failed
我想要 select 第一个 id 有 class a.
<li class="a" id="1">1</li>
<li class="a" id="2">2</li>
<li class="a" id="3">3</li>
var c = document.querySelectorAll(".a#1");
c.remove();
我使用 querySelectorAll 但出现
错误
Uncaught SyntaxError: Failed to execute 'querySelectorAll' on 'Document': '.a #1' is not a valid selector.
我知道在 jquery 中它是像 $('.a#1').remove() 那样完成的并且它会工作 但我使用的是 zepto，所以我必须弄清楚纯js.
带号码的ID名称无效，但您可以如下查询
document.querySelector('.a#\31');
If the first character of an identifier is numeric, you’ll need to
escape it based on its Unicode code point. For example, the code point
for the character 1 is U+0031, so you would escape it as [=11=]0031 or
.
有关详细信息，请参阅此 Using querySelector with IDs that are numbers
我想要 select 第一个 id 有 class a.
<li class="a" id="1">1</li>
<li class="a" id="2">2</li>
<li class="a" id="3">3</li>
var c = document.querySelectorAll(".a#1");
c.remove();
我使用 querySelectorAll 但出现
错误Uncaught SyntaxError: Failed to execute 'querySelectorAll' on 'Document': '.a #1' is not a valid selector.
我知道在 jquery 中它是像 $('.a#1').remove() 那样完成的并且它会工作 但我使用的是 zepto，所以我必须弄清楚纯js.
带号码的ID名称无效，但您可以如下查询
document.querySelector('.a#\31');
If the first character of an identifier is numeric, you’ll need to escape it based on its Unicode code point. For example, the code point for the character 1 is U+0031, so you would escape it as [=11=]0031 or .
有关详细信息，请参阅此 Using querySelector with IDs that are numbers