为什么在添加新项目时,flex容器中的项目没有重新排序



我有两个包含flex项的flex容器,每个容器都有一个order属性。每个flex项都有一个事件侦听器。当单击一个flex项(本例中为div(时,div会移动到另一个flex容器。

但是,例如,如果我单击下面顺序为1的div,则新位置将位于id为#的容器中顺序为3的div的右侧。因此,在某种程度上,flex容器不会被更新。我做错了什么吗?还是这是预期的行为?我运行91.4.0esr版本,Firefox for openSUSE Leap,openSUSE-15.2和Google Chrome 98.0.4758.80版本(官方版本((64位(。

function moveOption() {
let optionDivs = document.querySelectorAll('.item');
optionDivs.forEach(function(div) {
div.addEventListener('click', function() {
if (this.parentElement.id === 'non-selected') {
document.getElementById('selected').append(div);
} else {
document.getElementById('non-selected').append(div);
}
});
});
}
moveOption();
#selected,
#non-selected {
width: 50%;
position: relative;
display: flex;
flex-wrap: wrap;
border: 1px solid black;
padding: 3px;
gap: 3px;
background-color: white;
height: 50px;
max-height: 100px;
}
.item {
border: 1px solid black;
border-radius: 4px;
background-color: #ccc;
cursor: grab;
width: max-content;
box-sizing: border-box;
align-items: center;
display: flex;
height: 40px;
padding-right: 5px;
padding-left: 5px;
}
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta charset="utf-8">
<script type="module" src="bc-select.js"></script>
</head>
<body>
Click or Order 1 &quot;button&quot; and it will be positioned right to the Order 3 &quot;button&quot; despite it has a lower value for the order property.
<div id="selected">
<div order="1" class="item">Order 1</div>
<div order="2" class="item">Order 2</div>
</div>
<div id="non-selected">
<div order="3" class="item">Order 3</div>
</div>
</body>
</html>

非标准的order属性不会影响Flex或Grid容器中的排序。您需要改为设置orderCSS属性。

所以不是:

<div order="1">

您需要:

<div style="order:1;">

更新的演示:

function moveOption() {
let optionDivs = document.querySelectorAll('.item');
optionDivs.forEach(function(div) {
div.addEventListener('click', function() {
if (this.parentElement.id === 'non-selected') {
document.getElementById('selected').append(div);
} else {
document.getElementById('non-selected').append(div);
}
});
});
}
moveOption();
#selected,
#non-selected {
width: 50%;
position: relative;
display: flex;
flex-wrap: wrap;
border: 1px solid black;
padding: 3px;
gap: 3px;
background-color: white;
height: 50px;
max-height: 100px;
}
.item {
border: 1px solid black;
border-radius: 4px;
background-color: #ccc;
cursor: grab;
width: max-content;
box-sizing: border-box;
align-items: center;
display: flex;
height: 40px;
padding-right: 5px;
padding-left: 5px;
}
<div id="selected">
<div style="order:1;" class="item">Order 1</div>
<div style="order:2;" class="item">Order 2</div>
</div>
<div id="non-selected">
<div style="order:3;" class="item">Order 3</div>
</div>

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