使用使用书签在浏览器中运行的 Javascript，我的目标是从网页上的链接收集数据，然后将其放入格式化的 CSV 文件中以供下载。我所看到的任务是：
我已经完成了 1 和 2，给了我一个数组作为表的列。我被困在 3 和 4。这是数据示例：
// test data for 'const' column (length of array will be variable)
var dataColumn = ["tt0468569", "tt0111161", "tt1795369", "tt7738450"];
// making arrays for other columns in export table (most of the other columns will be empty)
var emptyArray = Array(dataColumn.length).fill('')
var titleType = Array(dataColumn.length).fill('Feature Film')
// make array of arrays (columns) ready to export as csv
var dataTable = [emptyArray,dataColumn,emptyArray,emptyArray,emptyArray,emptyArray,titleType,emptyArray,emptyArray,emptyArray,emptyArray,emptyArray,emptyArray,emptyArray,emptyArray,emptyArray];
// column headers for table
var tableHeaders = ["position","const","created","modified","description","Title","Title type","Directors","You rated","IMDb Rating","Runtime (mins)","Year","Genres","Num. Votes","Release Date (month/day/year)","URL"]
我想要的输出：
position,const,created,modified,description,Title,Title type,Directors,You rated,IMDb Rating,Runtime (mins),Year,Genres,Num. Votes,Release Date (month/day/year),URL
,tt0468569,,,,,Feature Film,,,,,,,,,
,tt0111161,,,,,Feature Film,,,,,,,,,
,tt1795369,,,,,Feature Film,,,,,,,,,
,tt7738450,,,,,Feature Film,,,,,,,,,
您几乎完成了创建数组的工作，只需要更改创建tableData. 而不是附加tableData一组数组 asempty array而title array您需要相应地映射它们。
看看下面的片段：
function downloadExcel() {
var dataColumn = ["tt0468569", "tt0111161", "tt1795369", "tt7738450"];
var tableHeaders = ["position", "const", "created", "modified", "description", "Title", "Title type", "Directors", "You rated", "IMDb Rating", "Runtime (mins)", "Year", "Genres", "Num. Votes", "Release Date (month/day/year)", "URL"];
//now a container for the excel data i.e. tableHeaders+datacreated:
var dataTable = new Array();
dataTable.push(tableHeaders);
//now looping around the data
dataColumn.forEach(function(col) {
dataTable.push(['', col, '', '', '', '', 'Feature Film', '', '', '', '', '', '', '', '', '']);
});
//now converting the array given into a `csv` content
let csvContent = "data:text/csv;charset=utf-8,";
dataTable.forEach(function(rowArray) {
let row = rowArray.join(",");
csvContent += row + "\r\n";
});
//calling the csv download via anchor tag(link) so we can provide a name for the file
var encodedUri = encodeURI(csvContent);
var link = document.createElement("a");
link.setAttribute("href", encodedUri);
link.style.display = 'none';
link.setAttribute("download", "myCSV.csv"); //change it to give your own name
link.innerHTML = "Click Here to download";
document.body.appendChild(link); // Required for FF
link.click();
link.remove(); //removing the link after the download
}<button onclick="downloadExcel()">Click me to Download excel</button>本文收集自互联网，转载请注明来源。
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