只要你具备了精神气质的美，只要你有这样的自信，你就会拥有风度的自然之美。——金马
分享一个js的拖拽框选插件
官网：https://dragselect.com/
源码：https://github.com/ThibaultJanBeyer/DragSelect.git
使用：
有前端大佬翻译了部分，并编写了一个html的demo
https://gitee.com/ovsexia/DragSelect-Doc-Cn
我在使用过程中发现反选有点问题，所以如果是跟我一样pnpm i下载下的版本，应该也会有这个问题，因此反选自己实现即可，这是我按照上面链接中的demo在vue模块化项目中的组件：
TagDragSelect.vue
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| <!-- https://gitee.com/ovsexia/DragSelect-Doc-Cn -->
<!-- https://github.com/houbb/opencc4j -->
<!-- -->
<script>
import DragSelect from "dragselect";
export default {
name: "TagDragSelect",
data() {
return { ds: null };
},
mounted() {
console.log(window);
console.log(document);
this.ds = new DragSelect({
area: document.getElementById("ul"),
selectables: document.getElementsByClassName("mar"),
//选中
onElementSelect: (element) => {
// console.log("onElementSelect", { element });
element.classList.add("on");
element.querySelector('input[type="checkbox"]').checked = true;
},
//取消选中
onElementUnselect: (element) => {
// console.log("onElementUnselect", { element });
element.classList.remove("on");
element.querySelector('input[type="checkbox"]').checked = false;
},
//鼠标抬起后返回所有选中的元素
callback: (elements) => {
console.log(elements);
},
});
console.log({ "this.ds": this.ds });
},
methods: {
selectAll() {
this.ds.setSelection(this.ds.getSelectables());
},
selectNone() {
this.ds.clearSelection();
},
selectReverse() {
const elements = this.ds.getSelectables()
const willRemoveSelection = [];
const willAddSelection = [];
elements.forEach((el) => (this.ds.SelectedSet.has(el) ? willRemoveSelection : willAddSelection).push(el))
this.ds.removeSelection(willRemoveSelection)
this.ds.addSelection(willAddSelection)
},
},
render() {
return (
<div class="margin">
<div class="tip">
<p>提示：</p>
<p>1.在灰色区域内拖动选择，也可以点击选择</p>
<p>
2.主区域最好添加css 属性 user-select:none
取消文本选择，防止选择事件冲突
</p>
</div>
<div id="ul" class="ul">
{Array.from({ length: 20 }, (i, len) => (
<div class="li">
<div class={"mar mar" + len}>
<span class="checkbox"></span>
<input type="checkbox" />
</div>
</div>
))}
</div>
<button onClick={this.selectAll}>全选</button>
<button onClick={this.selectNone}>全不选</button>
<button onClick={this.selectReverse}>反选</button>
</div>
);
},
};
</script>
<style scoped>
.margin {
width: 1000px;
margin: 100px auto 0;
}
.tip {
text-align: center;
font-size: 16px;
padding-bottom: 10px;
line-height: 22px;
}
.ul:after {
content: "";
display: block;
clear: both;
}
.ul {
background-color: #ccc;
padding: 40px 35px 0;
user-select: none;
}
.li {
width: 25%;
float: left;
margin-bottom: 40px;
}
.li .mar {
margin: 0 20px;
height: 120px;
background-color: #ddd;
position: relative;
}
.li .mar.on {
background-color: #4892db;
}
.li .mar input[type="checkbox"] {
visibility: hidden;
}
.checkbox {
width: 18px;
height: 18px;
border: 2px solid #13b8cb;
background-color: #fff;
position: absolute;
top: 3px;
left: 3px;
}
.checkbox:before,
.checkbox:after {
content: "";
display: block;
background-color: #fff;
height: 2px;
position: absolute;
}
.checkbox:before {
width: 7px;
top: 10px;
left: 2px;
transform: rotate(45deg);
}
.checkbox:after {
width: 12px;
top: 8px;
left: 5px;
transform: rotate(-45deg);
}
.li .mar.on .checkbox {
background-color: #13b8cb;
}
.li .mar.on .checkbox:after,
.li .mar.on .checkbox:before {
background-color: #fff;
}
</style>
|