[英]Use querySelector to get select based on two conditions, one being a prefix
So I am trying to select a div based on two conditions, one being a prefix.所以我试图 select 一个 div 基于两个条件,一个是前缀。
So if I have所以如果我有
<div class="bob delay-10"></div>
<div class="joe delay-20"></div>
I want to have我希望有
function getdelay (classname) {
let delayselect = document.querySelector("*[class='"+classname+"'], *[class*='delay-']");
return delayselect;
}
getdelay("joe");
should return <div class="joe delay-20"></div>
应该返回
<div class="joe delay-20"></div>
Currently the way it is working is it is selecting OR
not AND
.目前它的工作方式是选择
OR
not AND
。
How can I fix this?我怎样才能解决这个问题?
Use an actual class selector ( .
) for the fixed class name part.对于固定的 class 名称部分,使用实际的 class 选择器 (
.
)。
let delayselect = document.querySelector(`.${classname}[class*='delay-']`);
The backticks ("template literals") allow for simpler inclusion of expressions in strings.反引号(“模板文字”)允许更简单地在字符串中包含表达式。
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