JavaScript comments can be used to explain JavaScript code, and to make it more readable. JavaScript comments can also be used to prevent execution, when testing alternative code. Single Line Comments Single line comments start with//. Any text between//and the end of the line will be ignored...
The comments should be profusely used for better understanding of the code. The above code produces the following result Name : Michael Johnson Address : 123 Main Street Austin, TX Multiline Comments If we have multiple lines that we want to comment, then we can elcose them between /* and...
// Two slashes start single-line commentsvarx;// declaring a variablex=3+y;// assigning a value to the variable `x`foo(x,y);// calling function `foo` with parameters `x` and `y`obj.bar(3);// calling method `bar` of object `obj`// A conditional statementif(x===0){// Is ...
4.6 Use line breaks after open and before close array brackets if an array has multiple lines// bad const arr = [ [0, 1], [2, 3], [4, 5], ]; const objectInArray = [{ id: 1, }, { id: 2, }]; const numberInArray = [ 1, 2, ]; // good const arr = [[0, 1], ...
AST(Abstract Syntax Tree),中文抽象语法树,简称语法树(Syntax Tree),是源代码的抽象语法结构的树状表现形式,树上的每个节点都表示源代码中的一种结构。语法树不是某一种编程语言独有的,JavaScript、Python、Java、Golang 等几乎所有编程语言都有语法树。
Command line usage uglifyjs [input files] [options] UglifyJS can take multiple input files. It's recommended that you pass the input files first, then pass the options. UglifyJS will parse input files in sequence and apply any compression options. The files are parsed in the same global ...
4.8 Use line breaks after opening array brackets and before closing array brackets, if an array has multiple lines // bad const arr = [ [0, 1], [2, 3], [4, 5], ]; const objectInArray = [{ id: 1, }, { id: 2, }]; const numberInArray = [ 1, 2, ]; // good const ...
HtmlLineComment: a (non-standard) HTML comment HtmlCommentStart: an HTML comment starting with <!-- HtmlCommentEnd: an HTML comment ending with --> BlockComment: a block comment potentially spanning multiple lines SlashStarComment: a plain JavaScript block comment surrounded with /*...*/ Doc...
You may also choose multiple suites: describe('Array', function() { describe.only('#indexOf()', function() { it('should return -1 unless present', function() { // this test will be run }); it('should return the index when present', function() { // this test will also be run...
When separated by semicolons, multiple statements on one line are allowed: a =5; b =6; c = a + b; Try it Yourself » On the web, you might see examples without semicolons. Ending statements with semicolon is not required, but highly recommended. ...