我需要在Svelte中使用标记和CSS使隐藏的删除按钮在焦点输入时出现并起作用。
我已经在OS X和树莓派OS的浏览器中(Chrome、Chromium、Safari和Firefox)实现了所有功能。 单击此处查看。
问题是,在我的iOS浏览器(Safari或Firefox)中,该按钮虽然出现,但无法正常工作。单击删除按钮时没有任何反应。
我尝试过以下方法:
以下是标记...
<form>
{#if $todos}
{#each $todos as { data }, i}
<div id="todo">
<button on:click|preventDefault={remove(i + 1)}></button>
<input
bind:value={data.name}
on:change={update(i + 1)}
size={data.name.length}
maxlength="35"
/>
</div>
{/each}
{/if}
</form>
...这里是样式...
<style>
form,
div {
display: flex;
flex-wrap: wrap;
}
input {
border-style: none;
font-size: 2vh;
}
input:focus {
border-style: solid;
}
button {
visibility: hidden;
font-size: 2vh;
}
#todo:focus-within button {
visibility: visible;
}
</style>
form,
div {
display: flex;
}
form {
width: 100vw;
}
input {
border-style: none;
}
input:focus {
border-style: solid;
}
button {
visibility: hidden;
}
#todo1:focus-within button {
visibility: visible;
}
#todo2:focus-within button {
visibility: visible;
}
#todo3:focus-within button {
visibility: visible;
}
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Svelte + Node.js API</title>
</head>
<body>
<h1>To Do</h1>
<form>
<div id="todo1">
<button onclick="alert('Input deleted')"></button>
<input value="Try it out">
</div>
<div id="todo2">
<button onclick="alert('Input deleted')"></button>
<input value="Fix the bug">
</div>
<div id="todo3">
<button onclick="alert('Input deleted')"></button>
<input value="Celebrate">
</div>
</form>
</body>
</html>