Rumah >hujung hadapan web >tutorial js >Penjelasan terperinci tentang penggunaan alat pemampatan dan penyahmampatan zip Zip.js dilaksanakan oleh kemahiran JavaScript_javascript
Apa itu zip.js
alamat projek github zip.js: http://gildas-lormeau.github.io/zip.js/
Gunakan zip.js untuk merangkumkan pemalam yang boleh menjana fail zip pada halaman web. Cipta pakej termampat yang mengandungi folder dan fail secara terus pada halaman web. Anda juga boleh menyesuaikan nama dan memuat turunnya
Cara menggunakan:1: Petikan zip.js
2: Petikan jQuery;
3: Dan rujuk ZipArchive.js yang dikapsulkan, (kerana api zip.js menyusahkan untuk digunakan, jadi saya merangkum dan melaksanakan pemalam ini sendiri)
4: Rujukan mime-types.js;
Lihat DEMO, gunakan kaedah:
Jalankan kod berikut
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <script src="http://gildas-lormeau.github.io/zip.js/demos/zip.js"></script> <script src="http://gildas-lormeau.github.io/zip.js/demos/mime-types.js"></script> <script src="http://apps.bdimg.com/libs/jquery/1.9.0/jquery.js"></script> <script src="http://files.cnblogs.com/files/diligenceday/ZipArchive.js"></script> </head> <body> <script> var z = new ZipArchive; z.addFile("a/a.txt", "aaaaaaacontent"); z.addFile("aaaa.txt", "aaaaaaaccccc"); z.export("nono"); </script> </body> </html>
Kembali ke atas
Jalankan kod berikut
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <script src="http://gildas-lormeau.github.io/zip.js/demos/zip.js"></script> <script src="http://gildas-lormeau.github.io/zip.js/demos/mime-types.js"></script> <script src="http://apps.bdimg.com/libs/jquery/1.9.0/jquery.js"></script> <style> code{ display: block; padding: 10px; background: #eee; } </style> </head> <body> <div> <h1> 兼容性 </h1> <div> <p> zip.js可以在所有的chrome浏览器和firefox浏览器中运行, 可以在safari6和IE10,以及IE10以上运行; </p> <p> 如果要在IE9和safari中运行需要两个设置: </p> <code> 1:zip.useWebWorkers == false </code> <code> 2:并引用这个JS:https://bitbucket.org/lindenlab/llsd/raw/7d2646cd3f9b/js/typedarray.js </code> </div> </div> <script> zip.workerScriptsPath = "http://gildas-lormeau.github.io/zip.js/demos/"; /** * @desc 压缩文件; * @event onprogress, onend, onerror; * */ var ZipArchive = function() { function noop() {}; this.name = "未命名文件"; this.zippedBlob = {}; var _this = this; this.length = 0; this.onend = noop; this.onerror = noop; this.onprogress = noop; //创建一个延迟对象; var def = this.defer = new $.Deferred(); zip.createWriter( new zip.BlobWriter("application/zip"), function(zipWriter) { _this.zipWriter = zipWriter; //继续执行队列; def.resolve(); }, this.error ); }; ZipArchive.blob = function (filename, content) { return new Blob([ content ], { type : zip.getMimeType(filename) }); }; $.extend( ZipArchive.prototype, { /** * @desc 添加文件 * @param String filename为文件的名字; * @param String content; * @param Object options 传参 * 例如:{ level : 0} 压缩的等级,0 到 9; * 例如:{ comment : "提示文字" } * 例如:{ lastModDate : "最后编辑时间" } * */ "addFile" : function ( filename , content, options) { var _this = this; blob = ZipArchive.blob(filename, content); //为了产生链式的效果, 必须把deferrer赋值给新的defer this.defer = this.defer.then(function() { var def = $.Deferred(); _this.zipWriter.add(filename, new zip.BlobReader(blob) ,function() { // reader console.log("addFile success!!"); def.resolve(); //zipWriter.close(callback); }, function (size, total) { //onend _this.onend(filename, blob, total); _this.length += total; }, function () { //onprogress _this.onprogress(filename, blob, total); },options || { //options }); return def; }); }, /** * @desc 添加文件夹, 我发现这个文件无法创建; * @desc 创建文件夹功能不好用, 需要创建文件夹你通过 zipWriter.addFile("directory/filename.txt", blob())创建文件夹和对应文件;; * */ "_addFolder" : function (foldername , options) { //创建文件夹功能目前不能用; //创建文件夹功能不好用, 直接通过 zipWriter.addFile("directory/filename.txt", blob())创建文件夹和文件 return this; }, "size" : function () { return this.length; }, /** * @desc 获取blob文件 * */ "get" : function () { return this.zippedBlob; }, /** * @desc 导出为zip文件 * */ "export" : function ( name ) { name = name || this.name; var _this = this; this.defer.then(function() { _this.zipWriter.close(function( zippedBlob ) { if( typeof name === "string" || typeof name === "number") { var downloadButton = document.createElement("a"), URL = window.webkitURL || window.mozURL || window.URL; downloadButton.href = URL.createObjectURL( zippedBlob ); downloadButton.download = name + ".zip"; downloadButton.click(); }else{ name( zippedBlob ); }; }); }); }, "error" : function() { this.onerror( this ); throw new Error("压缩文件创建失败"); } }); </script> <script> var z = new ZipArchive; z.addFile("a/a.txt", "aaaaaaacontent"); z.addFile("aaaa.txt", "aaaaaaaccccc"); z.export("nono"); </script> </body> </html>