在这个代码中,有以下功能:
- selectedOptions 数组用于存储选中的选项。
- 点击选中的选项后,可以通过点击删除按钮移除选项。
- 增加了一个搜索框,可以根据输入的文本过滤选项。
- 使用复选框实现多选功能。
<template>
<div class="dropdown">
<div class="selected-option" @click="toggleDropdown">
<div class="selected-values">
<span v-for="(option, index) in selectedOptions" :key="index" class="selected-value">
{{ option }}
<span class="delete" @click="removeOption(option)">
×
</span>
</span>
</div>
<input type="text" v-model="searchText" placeholder="请选择选项" @input="filterOptions">
<span class="arrow"></span>
</div>
<ul v-if="showDropdown" class="options-list">
<li v-for="option in filteredOptions" :key="option" @click="toggleOption(option)">
<input type="checkbox" :value="option" :checked="isSelected(option)">
<label>{{ option }}</label>
</li>
</ul>
</div>
</template>
<script>
export default {
data() {
return {
options: ['选项1', '选项2', '选项3', '选项4'], // 下拉框的选项数据
selectedOptions: [], // 当前选中的选项
showDropdown: false, // 控制悬浮框的显示状态
searchText: '', // 过滤选项的搜索文本
};
},
computed: {
filteredOptions() {
return this.options.filter(option =>
option.toLowerCase().includes(this.searchText.toLowerCase())
);
},
},
methods: {
toggleDropdown() {
this.showDropdown = !this.showDropdown;
},
toggleOption(option) {
if (this.isSelected(option)) {
this.removeOption(option);
} else {
this.selectedOptions.push(option);
}
},
removeOption(option) {
const index = this.selectedOptions.indexOf(option);
if (index !== -1) {
this.selectedOptions.splice(index, 1);
}
},
isSelected(option) {
return this.selectedOptions.includes(option);
},
filterOptions() {
this.showDropdown = true;
},
},
};
</script>
<style>
.dropdown {
position: relative;
display: inline-block;
}
.selected-option {
display: flex;
align-items: center;
padding: 8px;
border: 1px solid #ccc;
border-radius: 4px;
cursor: pointer;
}
.selected-values {
display: flex;
flex-wrap: wrap;
}
.selected-value {
display: flex;
align-items: center;
background-color: #f2f2f2;
padding: 4px 8px;
border-radius: 16px;
margin-right: 4px;
margin-bottom: 4px;
}
.selected-value .delete {
margin-left: 4px;
cursor: pointer;
}
.selected-option input {
flex: 1;
border: none;
background-color: transparent;
outline: none;
cursor: pointer;
}
.arrow {
width: 0;
height: 0;
border-style: solid;
border-width: 5px 5px 0 5px;
border-color: #999 transparent transparent transparent;
margin-left: 4px;
}
.options-list {
position: absolute;
top: 100%;
left: 0;
width: 100%;
background-color: #fff;
border: 1px solid #ccc;
border-radius: 4px;
list-style: none;
padding: 0;
margin: 0;
}
.options-list li {
display: flex;
align-items: center;
padding: 8px;
cursor: pointer;
transition: background-color 0.3s ease;
}
.options-list li:hover {
background-color: #f2f2f2;
}
.options-list li input[type="checkbox"] {
margin-right: 8px;
cursor: pointer;
}
</style>
在这个代码中添加一个确认按钮,用于提交用户选择的选项。
要在上述代码中添加一个确认按钮,用于提交用户选择的选项,你可以按照以下步骤进行修改:
1:在模板中添加一个确认按钮元素,例如:
<button class="confirm-button" @click="submitSelection">确认</button>
2:在data中添加一个布尔类型的showConfirmButton属性,并将其初始值设为false:
data() {
return {
// ...
showConfirmButton: false,
};
},
3:在toggleDropdown方法中,将showConfirmButton的值设为false,以确保下拉框展开时确认按钮隐藏:
toggleDropdown() {
this.showDropdown = !this.showDropdown;
this.showConfirmButton = false;
},
4:在toggleOption方法中,将showConfirmButton的值设为true,以确保选择选项时确认按钮显示:
toggleOption(option) {
// ...
this.showConfirmButton = true;
},
5:添加submitSelection方法用于处理确认按钮的点击事件,例如:
submitSelection() {
// 在这里处理提交选项的逻辑
console.log('已选择的选项:', this.selectedOptions);
// 重置选项并隐藏确认按钮
this.selectedOptions = [];
this.showConfirmButton = false;
},
6:在样式中添加确认按钮的样式定义,例如:
.confirm-button {
display: block;
margin-top: 8px;
padding: 8px 16px;
background-color: #4CAF50;
color: #fff;
border: none;
border-radius: 4px;
cursor: pointer;
}
demo
<template>
<div class="dropdown">
<div class="selected-option" @click="toggleDropdown">
<div class="selected-values">
<span
v-for="(option, index) in selectedOptions"
:key="index"
class="selected-value"
>
{{ option }}
<span class="delete" @click="removeOption(option)"> × </span>
</span>
</div>
<input
type="text"
v-model="searchText"
placeholder="请选择选项"
@input="filterOptions"
/>
<span class="arrow"></span>
</div>
<button class="confirm-button" @click="submitSelection">确认</button>
<ul v-if="showDropdown" class="options-list">
<li
v-for="option in filteredOptions"
:key="option"
@click="toggleOption(option)"
>
<input type="checkbox" :value="option" :checked="isSelected(option)" />
<label>{{ option }}</label>
</li>
</ul>
</div>
</template>
<script>
export default {
data() {
return {
options: ["选项1", "选项2", "选项3", "选项4"], // 下拉框的选项数据
selectedOptions: [], // 当前选中的选项
showDropdown: false, // 控制悬浮框的显示状态
searchText: "", // 过滤选项的搜索文本
// ...
showConfirmButton: false,
};
},
computed: {
filteredOptions() {
return this.options.filter((option) =>
option.toLowerCase().includes(this.searchText.toLowerCase())
);
},
},
methods: {
toggleDropdown() {
this.showDropdown = !this.showDropdown;
this.showConfirmButton = false;
},
toggleOption(option) {
this.showConfirmButton = true;
if (this.isSelected(option)) {
this.removeOption(option);
} else {
this.selectedOptions.push(option);
}
},
removeOption(option) {
const index = this.selectedOptions.indexOf(option);
if (index !== -1) {
this.selectedOptions.splice(index, 1);
}
},
submitSelection() {
// 在这里处理提交选项的逻辑
console.log("已选择的选项:", this.selectedOptions);
// 重置选项并隐藏确认按钮
this.selectedOptions = [];
this.showConfirmButton = false;
},
isSelected(option) {
return this.selectedOptions.includes(option);
},
filterOptions() {
this.showDropdown = true;
},
},
};
</script>
<style>
.confirm-button {
display: block;
margin-top: 8px;
padding: 8px 16px;
background-color: #4caf50;
color: #fff;
border: none;
border-radius: 4px;
cursor: pointer;
position: absolute;
right: -31%;
top: -21%;
}
.dropdown {
position: relative;
display: inline-block;
}
.selected-option {
display: flex;
align-items: center;
padding: 8px;
border: 1px solid #ccc;
border-radius: 4px;
cursor: pointer;
}
.selected-values {
display: flex;
flex-wrap: wrap;
}
.selected-value {
display: flex;
align-items: center;
background-color: #f2f2f2;
padding: 4px 8px;
border-radius: 16px;
margin-right: 4px;
margin-bottom: 4px;
}
.selected-value .delete {
margin-left: 4px;
cursor: pointer;
}
.selected-option input {
flex: 1;
border: none;
background-color: transparent;
outline: none;
cursor: pointer;
}
.arrow {
width: 0;
height: 0;
border-style: solid;
border-width: 5px 5px 0 5px;
border-color: #999 transparent transparent transparent;
margin-left: 4px;
}
.options-list {
position: absolute;
top: 100%;
left: 0;
width: 100%;
background-color: #fff;
border: 1px solid #ccc;
border-radius: 4px;
list-style: none;
padding: 0;
margin: 0;
}
.options-list li {
display: flex;
align-items: center;
padding: 8px;
cursor: pointer;
transition: background-color 0.3s ease;
}
.options-list li:hover {
background-color: #f2f2f2;
}
.options-list li input[type="checkbox"] {
margin-right: 8px;
cursor: pointer;
}
</style>
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