原生js实现框选表格内容并批量更改(vue)

前言

日常开发中,有这样的需要,须要在表格中进行框选,并对框选中的内容进行批量更改。源码于文章结尾

demo

上面链接供在线调试:

https://codesandbox.io/s/tabl...

解说

次要思路通过监听鼠标事件,进行框选框绘制。获取框选 的dom,并计算其是否在框选区域,来进行批量更改。其中次要的形式 getClientRects。

业务代码:

1、初始化表格数据结构

因为表格为星期/工夫,绝对构造会有点子简单,问题不大,giao。

setTableConfig() {    let timeThArr = Array.from(new Array(24).keys());    let timeTdArr = Array.from(new Array(48).keys());    timeTdArr = timeTdArr.map((item) => {      let obj = {        id: item,      };      return obj;    });    this.timeThArr = timeThArr;    this.timeTdArr = timeTdArr;    let tableList = this.tableData;    tableList.map((item, index) => {      this.timeThArr.map((temp, key) => {        item.push({          key: key + index * 24,        })      })    })    this.tableData = tableList;  },

2、点击单格选中

除了框选也能够单击选中

handleClickTimeData(obj, index) {    let tableList = _.clone(this.tableData);    _.map(tableList[index], (item) => {      if (item.key == obj.key) {        item.checked = !item.checked;      }    });    this.tableData = tableList;},   

3、重置

勾销所有框选

reset() {    let tableList = _.clone(this.tableData);    _.map(tableList, (item) => {      _.map(item, temp => {        temp.checked = false;      })    });    this.tableData = tableList;},
框选代码

1、表格绑定mousedown、mousemove、mouseup事件

handleMouseDown(e) {    this.is_show_mask = true;    this.start_x = e.clientX;    this.start_y = e.clientY;    this.end_x = e.clientX;    this.end_y = e.clientY;    document.body.addEventListener("mousemove", this.handleMouseMove);    document.body.addEventListener("mouseup", this.handleMouseUp);},handleMouseMove(e) {    this.end_x = e.clientX;    this.end_y = e.clientY;},handleMouseUp() {    document.body.removeEventListener("mousemove", this.handleMouseMove);    document.body.removeEventListener("mouseup", this.handleMouseUp);    this.is_show_mask = false;    this.handleDomSelect();    this.resetXY();},

2、计算dom是否在蕴含在框选区域外部

collide(rect1, rect2) {    const maxX = Math.max(rect1.x + rect1.width, rect2.x + rect2.width);    const maxY = Math.max(rect1.y + rect1.height, rect2.y + rect2.height);    const minX = Math.min(rect1.x, rect2.x);    const minY = Math.min(rect1.y, rect2.y);    if (      maxX - minX <= rect1.width + rect2.width &&      maxY - minY <= rect1.height + rect2.height    ) {      return true;    } else {      return false;    }},

3、鼠标松开后进行一系列操作

(1)首先获取框选的dom,次要的办法为getClientRects
(2)而后计算获取的元素是否在框选范畴内
(3)对范畴内的dom进行后续操作

handleDomSelect() {    const dom_mask = window.document.querySelector(".mask");    const rect_select = dom_mask.getClientRects()[0];        let selectKeys = [];    document.querySelectorAll(".week-data-td").forEach((node, index) => {      const rects = node.getClientRects()[0];      if (this.collide(rects, rect_select) === true) {        selectKeys.push(index);      }    });    if (selectKeys.length < 2) return;    let tableList = _.clone(this.tableData);    tableList = _.map(tableList, (item, key) => {      return _.map(item, (temp) => {        if (selectKeys.indexOf(temp.key) > -1) {          temp.checked = true;        }        return temp;      });    });    this.tableData = tableList;},

框选这部分代码,具体参考大佬代码

http://www.360doc.com/content...

源码

https://github.com/ttypZhoupe...

末了

如果这篇文章对大佬有帮忙,请不要悭吝你的赞。来个一键三连就更好了,感激大佬参阅。