How to use js-xlsx to merge cells-JS Tutorial-php.cn

How to use js-xlsx to merge cells

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Release： 2018-03-12 15:02:00

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This time I will show you how to use s-xlsx to merge cells, and what are the precautions for using s-xlsx to merge cells. The following is a practical case, let's take a look.

Import data observation data format

1.1. Let’s first create an xlsx table with merged cells

Let’s take the example of header data merging:

How to use js-xlsx to merge cells

Example

1.2. Write a simple data import function (you can refer to the article in the preface to write it, I will not put the code )

Import xlsx reference data format:

Example

How to use js-xlsx to merge cells

##1.3. Check the official website instructions

How to use js-xlsx to merge cells

Official website example (http://sheetjs.com/demos/modify.html):

Official website example

How to use js-xlsx to merge cells

According to the official website description, we can simply see that the data format of merged cells is:

........
data["!merges"] = [{
                s: {//s为开始
                    c: 1,//开始列
                    r: 0//可以看成开始行,实际是取值范围
                },
                e: {//e结束
                    c: 4,//结束列
                    r: 0//结束行
                }
            }];
........

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2. Hands-on experiment

2.1. Write a simple Export demo

<!DOCTYPE html><html><head>
    <meta charset="UTF-8">
    <title></title></head><body>
    <script src="http://oss.sheetjs.com/js-xlsx/xlsx.full.min.js"></script>
    <!--调用FileSaver saveAs函数可以实现文件下载-->
    <!--<script src="http://sheetjs.com/demos/Blob.js"></script>
    <script src="http://sheetjs.com/demos/FileSaver.js"></script>-->
    <script>
        //如果使用 FileSaver.js 就不要同时使用以下函数
        function saveAs(obj, fileName) {//当然可以自定义简单的下载文件实现方式 
            var tmpa = document.createElement("a");
            tmpa.download = fileName || "下载";
            tmpa.href = URL.createObjectURL(obj); //绑定a标签
            tmpa.click(); //模拟点击实现下载
            setTimeout(function () { //延时释放
                URL.revokeObjectURL(obj); //用URL.revokeObjectURL()来释放这个object URL
            }, 100);
        }        var jsono = [{ //测试数据
            "id": 1,//A
            "合并的列头1": "数据11",//B
            "合并的列头2": "数据12",//C
            "合并的列头3": "数据13",//D
            "合并的列头4": "数据14",//E
        }, {            "id": 2,            "合并的列头1": "数据21",            "合并的列头2": "数据22",            "合并的列头3": "数据23",            "合并的列头4": "数据24",
        }];//....
        const wopts = { bookType: &#39;xlsx&#39;, bookSST: true, type: &#39;binary&#39; };//这里的数据是用来定义导出的格式类型 
        function downloadExl(data, type) {            var wb = { SheetNames: [&#39;Sheet1&#39;], Sheets: {}, Props: {} };            //wb.Sheets[&#39;Sheet1&#39;] = XLSX.utils.json_to_sheet(data);//通过json_to_sheet转成单页(Sheet)数据
            data = XLSX.utils.json_to_sheet(data); 
            data["B1"] = { t: "s", v: "asdad" };
            data["!merges"] = [{//合并第一行数据[B1,C1,D1,E1]
                s: {//s为开始
                    c: 1,//开始列
                    r: 0//开始取值范围
                },                e: {//e结束
                    c: 4,//结束列
                    r: 0//结束范围
                }
            }];
            wb.Sheets[&#39;Sheet1&#39;] = data;
            saveAs(new Blob([s2ab(XLSX.write(wb, wopts))], { type: "application/octet-stream"}), "这里是下载的文件名" + &#39;.&#39; + (wopts.bookType == "biff2" ? "xls" : wopts.bookType));
        }        function s2ab(s) {            if (typeof ArrayBuffer !== &#39;undefined&#39;) {                var buf = new ArrayBuffer(s.length);                var view = new Uint8Array(buf);                for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;                return buf;
            } else {                var buf = new Array(s.length);                for (var i = 0; i != s.length; ++i) buf[i] = s.charCodeAt(i) & 0xFF;                return buf;
            }
        }    </script>
    <button onclick="downloadExl(jsono)">导出</button></body></html>

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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!