使用 ale.js 制做一个小而美的表格编辑器（4）

时间 2019-12-05

标签使用 ale.js ale 制做一个小而美的表格编辑器栏目 JavaScript 繁體版

原文原文链接

今天来教你们如何使用 ale.js 制做一个小而美的表格编辑器，首先先上 gif：javascript

是否是仍是有一点很是 cool 的感受的？那么咱们如今开始吧！java

这是咱们这篇文章结束后完成的效果（若是想继续完成请访问第五篇文章）：git

ok，那继续开始吧（本篇文章是表格编辑器系列的第四篇文章，若是您尚未看过第一篇，请访问第一篇文章（开源中国））：github

首先咱们须要先添加一个 Sreach 按钮（在 handleTemplateRender 函数里）：app

//把 定义DOM基本结构 的 returnVal
var returnVal = "<table><thead><tr>"

//改成
var returnVal = "<table><thead><button class='a-btn' onclick='this.methods.trigSearch()'>Search</button><tr>"

以后咱们须要在 methods 里面添加一个 trigSearch 函数：编辑器

trigSearch(){
    if (this.data.isOpenSearch) {
        this.data.data = this.staticData.preData;
        this.data.isOpenSearch = false;
    } else {
        this.data.isOpenSearch = true;
    }
}

接下来，咱们须要在 data 里添加一个 isOpenSearch 变量，默认为 false：函数

isOpenSearch: false

还要在 staticData 里添加一个 preData，用来存储 bookData 数据：this

preData: [
    ["The Lord of the Rings", "    J. R. R. Tolkien", "English", "1954-1955", "150 million"],
    ["The Little Prince", "Antoine de Saint-Exupéry", "French", "1943", "140 million"],
    ["Dream of the Red Chamber", "Cao Xueqin", "Chinese", "1791", "100 million"]
]

以后咱们要在 handleTemplateRender 函数中增长一个判断，判断是否 openSearch 开启了：spa

//把

//循环遍历bookHeader数据并输出
this.data.bookHeader.forEach(function(val, i, arr) {
    returnVal += "<th onclick='this.methods.handleTheadOnclick(event)'>" + val + (sortBy === i ? getSortSign() : '') + "</th>";
})

returnVal += "</thead></tr><tbody>";



//改成

//循环遍历bookHeader数据并输出
this.data.bookHeader.forEach(function(val, i, arr) {
    returnVal += "<th onclick='this.methods.handleTheadOnclick(event)'>" + val + (sortBy === i ? getSortSign() : '') + "</th>";
})

var cellId = -1;

if (this.data.isOpenSearch) { //这里增长判断
    returnVal += "</tr><tr>";
    for (var i = 0; i < this.data.bookHeader.length; i++) {
        cellId++;
        returnVal += "<th><input data-cell='" + cellId + "' type='text' oninput='this.methods.handleSearch(this, event)' placeHolder='Search...'></th>";
    }
}

returnVal += "</thead></tr><tbody>";

而后咱们要继续在 methods 里面添加一个名叫 handleSearch 的函数：.net

handleSearch(el, e) {
    var newData = [],
        elVal = el.value;
    this.staticData.preData.forEach(function(val, i, arr) {
        //判断是否拥有输入的字段
        if (val[e.target.dataset.cell].indexOf(elVal) !== -1) {
            //添加到返回对列中
            newData.push(val);
        }
    });

    this.data.bookData = newData;
}

如今咱们就已经实现了搜索功能，恭喜！

这是咱们目前所有的 js 代码：

Ale("excel", {
            template() {
                return this.methods.handleTemplateRender();
            },
            methods: {
                handleTemplateRender() {
                    //定义DOM基本结构
                    var returnVal = "<table><thead><button class='a-btn' onclick='this.methods.trigSearch()'>Search</button><tr>",
                        getSortSign = this.methods.getSortSign,
                        sortBy = this.staticData.sortBy,
                        rowId = -1,
                        edit = this.data.edit;

                    //循环遍历bookHeader数据并输出
                    this.data.bookHeader.forEach(function(val, i, arr) {
                        returnVal += "<th onclick='this.methods.handleTheadOnclick(event)'>" + val + (sortBy === i ? getSortSign() : '') + "</th>";
                    })

                    var cellId = -1;

                    if (this.data.isOpenSearch) {
                        returnVal += "</tr><tr>";
                        for (var i = 0; i < this.data.bookHeader.length; i++) {
                            cellId++;
                            returnVal += "<th><input data-cell='" + cellId + "' type='text' oninput='this.methods.handleSearch(this, event)' placeHolder='Search...'></th>";
                        }
                    }

                    returnVal += "</thead></tr><tbody>";

                    //循环遍历bookData数据并输出
                    this.data.bookData.forEach(function(thisBook, i, arr) {
                        var cellId = -1;
                        rowId++;
                        //输出一行
                        returnVal += "<tr>";
                        thisBook.forEach(function(val, i, arr) {
                            cellId++;
                            if (rowId === edit.row && cellId === edit.cell) {
                                returnVal += "<td><form data-cell='" + cellId + "' data-row='" + rowId + "' onsubmit='this.methods.save(event)'><input type='text' value='" + val + "'></form></td>";
                            } else {
                                returnVal += "<td data-cell='" + cellId + "' data-row='" + rowId + "' ondblclick='this.methods.handleBlockOndblclick(event)'>" + val + "</td>";
                            }
                        })
                        returnVal += "</tr>";
                    })
                    returnVal += "</tbody></table>";

                    //返回DOM结构
                    return returnVal;
                },
                handleTheadOnclick(e) {
                    this.methods.changeSortType(e);
                    this.methods.sortList(e);
                },
                changeSortType(e) {
                    this.staticData.sortBy = e.target.cellIndex;
                    if (this.staticData.sortType === "up") {
                        this.staticData.sortType = "down";
                    } else {
                        this.staticData.sortType = "up";
                    }
                },
                sortList(e) {
                    var index = e.target.cellIndex;
                    if (this.staticData.sortType === "up") {
                        this.data.bookData.sort(function(a, b) {
                            return a[index].charCodeAt(0) > b[index].charCodeAt(0) ? 1 : -1;
                        })
                    } else {
                        this.data.bookData.sort(function(a, b) {
                            return a[index].charCodeAt(0) < b[index].charCodeAt(0) ? 1 : -1;
                        })
                    }

                    this.data.bookData = this.data.bookData;
                },
                getSortSign() {
                    if (this.staticData.sortType === "up") {
                        return '\u2191';
                    } else {
                        return '\u2193';
                    }
                },
                handleBlockOndblclick(e) {
                    if (!this.staticData.isOpenEdit) {
                        this.staticData.isOpenEdit = true;
                        this.data.edit = {
                            row: parseInt(e.target.dataset.row),
                            cell: parseInt(e.target.dataset.cell)
                        }
                    }
                },
                save(e) {
                    e.preventDefault();
                    var input = e.target.firstChild;
                    this.staticData.isOpenEdit = false;
                    this.data.edit = {
                        row: -1,
                        cell: -1
                    }
                    this.data.bookData[e.target.dataset.row][e.target.dataset.cell] = input.value;
                    this.data.bookData = this.data.bookData;
                },
                trigSearch() {
                    if (this.data.isOpenSearch) {
                        this.data.bookData = this.staticData.preData;
                        this.data.isOpenSearch = false;
                    } else {
                        this.data.isOpenSearch = true;
                    }
                },
                handleSearch(el, e) {
                    var newData = [],
                        elVal = el.value;
                    this.staticData.preData.forEach(function(val, i, arr) {
                        if (val[e.target.dataset.cell].indexOf(elVal) !== -1) {
                            newData.push(val);
                        }
                    });

                    this.data.bookData = newData;
                }
            },
            data: {
                bookHeader: [
                    "Book", "Author", "Language", "Published", "Sales"
                ],
                bookData: [
                    ["The Lord of the Rings", "    J. R. R. Tolkien", "English", "1954-1955", "150 million"],
                    ["The Little Prince", "Antoine de Saint-Exupéry", "French", "1943", "140 million"],
                    ["Dream of the Red Chamber", "Cao Xueqin", "Chinese", "1791", "100 million"]
                ],
                edit: {
                    row: -1,
                    cell: -1
                },
                isOpenSearch: false
            },
            staticData: {
                sortBy: -1,
                sortType: 'down',
                isOpenEdit: false,
                preData: [
                    ["The Lord of the Rings", "    J. R. R. Tolkien", "English", "1954-1955", "150 million"],
                    ["The Little Prince", "Antoine de Saint-Exupéry", "French", "1943", "140 million"],
                    ["Dream of the Red Chamber", "Cao Xueqin", "Chinese", "1791", "100 million"]
                ]
            }
        })
        Ale.render("excel", {
            el: "#app"
        })

若是想了解更多，欢迎关注我在明天推出的第五篇教程，同时也关注一下 alejs 哦，感谢各位！

（很是重要：若是有能力的话不妨去 Github 或码云上 star 一下咱们吧！不过若是您特别喜欢 alejs 的话也能够 watch 或 fork 一下哦！十分感谢！）