uglify.js，浏览器版本返回“不是函数”-解网

问：

使用uglify.js浏览器版本，如上所述，在OP的第一条评论中，并在Chrome控制台中出现此错误：“UglifyJS.minify不是FileReader的函数。

使用的代码：

<!DOCTYPE html>
<html>
<head>
    <script src="https://lisperator.net/s/js/uglifyjs/uglify.js"></script>
    <style>
        #drop_zone{
            width: 300px;
            height: 300px;
            border: 2px dashed #bbb;
            text-align: center;
            padding: 5px;
        }
    </style>
</head>
<body>
    <div id="drop_zone">
        <span>Drag and drop HTML files to minify</span>
    </div>
    <script>
        console.log(UglifyJS);
        var filesAr = [],
        dz = document.getElementById('drop_zone');
        function handleFileSelect(evt) {
            evt.stopPropagation();
            evt.preventDefault();
            var files = evt.dataTransfer.files;
            for (var i = 0, f; f = files[i]; i++) {
                var reader = new FileReader();
                reader.onload = (function(file) {
                    return function(e) {
                        var minfd = UglifyJS.minify(e.target.result).code;
                        filesAr.push({name: file.name, min: minfd});
                    };
                })(f);
                reader.readAsText(f);
            }
            console.log(filesAr);
        }
        function handleDragOver(evt) {
            evt.stopPropagation();
            evt.preventDefault();
            evt.dataTransfer.dropEffect = 'copy';
        }
        dz.addEventListener('dragover', handleDragOver, false);
        dz.addEventListener('drop', handleFileSelect, false);
    </script>
</body>
</html>

这段代码有什么问题？

JavaScript 缩小客户端 UglifyJS

let ast = UglifyJS.parse(code);

// compressor needs figure_out_scope too
ast.figure_out_scope();
let compressor = UglifyJS.Compressor()
ast = ast.transform(compressor);

// need to figure out scope again so mangler works optimally
ast.figure_out_scope();
ast.compute_char_frequency();
ast.mangle_names();

// get Ugly code back :)
let code = ast.print_to_string();

<!DOCTYPE html>
<html>
<head>
    <script src="https://lisperator.net/s/js/uglifyjs/uglify.js"></script>
    <style>
        #drop_zone{
            width: 300px;
            height: 300px;
            border: 2px dashed #bbb;
            text-align: center;
            padding: 5px;
        }
    </style>
</head>
<body>
    <div id="drop_zone">
        <span>Drag and drop HTML files to minify</span>
    </div>
    <script>
        var filesAr = [],
        dz = document.getElementById('drop_zone');
        const UglifyJS = window.UglifyJS;
        console.log(UglifyJS);
        function handleFileSelect(evt) {
            evt.stopPropagation();
            evt.preventDefault();
            var files = evt.dataTransfer.files;
            for (var i = 0, f; f = files[i]; i++) {
                var reader = new FileReader();
                reader.onload = (function(file) {
                    return function(e) {
                        let ast = UglifyJS.parse(e.target.result);
                        ast.figure_out_scope();
                        let compressor = UglifyJS.Compressor()
                        ast = ast.transform(compressor);
                        ast.figure_out_scope();
                        ast.compute_char_frequency();
                        ast.mangle_names();
                        let code = ast.print_to_string();
                        console.log(code);
                        filesAr.push({name: file.name, min: minfd});
                    };
                })(f);
                reader.readAsText(f);
            }
            console.log(filesAr);
        }
        function handleDragOver(evt) {
            evt.stopPropagation();
            evt.preventDefault();
            evt.dataTransfer.dropEffect = 'copy';
        }
        dz.addEventListener('dragover', handleDragOver, false);
        dz.addEventListener('drop', handleFileSelect, false);
    </script>
</body>
</html>

这是我现在所拥有的：我必须放置上传的文件内容，因此 UglifyJS.parse（e.target.result）; 但仍然没有喜悦...... 我进入控制台：未捕获的 $ {message： '意外的令牌：运算符（<）' 对于每个文件。

uglify.js，浏览器版本返回“不是函数”

uglify.js, browser version returns "is not a function"

评论

评论

评论