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minor fixes to README.md

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alexlamsl
2017-05-16 01:33:01 +08:00
parent 3be06ad085
commit f18abd1b9c
1 changed files with 43 additions and 44 deletions
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README.md
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@@ -224,7 +224,7 @@ separate step, different from variable name mangling. Pass
`--mangle-props`. It will mangle all properties that are seen in some `--mangle-props`. It will mangle all properties that are seen in some
object literal, or that are assigned to. For example: object literal, or that are assigned to. For example:
```js ```javascript
var x = { var x = {
foo: 1 foo: 1
}; };
@@ -255,10 +255,10 @@ mangled to the same name in all of them. For this, pass `--name-cache filename.
and UglifyJS will maintain these mappings in a file which can then be reused. and UglifyJS will maintain these mappings in a file which can then be reused.
It should be initially empty. Example: It should be initially empty. Example:
``` ```bash
rm -f /tmp/cache.json # start fresh $ rm -f /tmp/cache.json # start fresh
uglifyjs file1.js file2.js --mangle-props --name-cache /tmp/cache.json -o part1.js $ uglifyjs file1.js file2.js --mangle-props --name-cache /tmp/cache.json -o part1.js
uglifyjs file3.js file4.js --mangle-props --name-cache /tmp/cache.json -o part2.js $ uglifyjs file3.js file4.js --mangle-props --name-cache /tmp/cache.json -o part2.js
``` ```
Now, `part1.js` and `part2.js` will be consistent with each other in terms Now, `part1.js` and `part2.js` will be consistent with each other in terms
@@ -273,7 +273,7 @@ Using quoted property name (`o["foo"]`) reserves the property name (`foo`)
so that it is not mangled throughout the entire script even when used in an so that it is not mangled throughout the entire script even when used in an
unquoted style (`o.foo`). Example: unquoted style (`o.foo`). Example:
``` ```bash
$ echo 'var o={"foo":1, bar:3}; o.foo += o.bar; console.log(o.foo);' | uglifyjs --mangle-props keep_quoted -mc $ echo 'var o={"foo":1, bar:3}; o.foo += o.bar; console.log(o.foo);' | uglifyjs --mangle-props keep_quoted -mc
var o={foo:1,a:3};o.foo+=o.a,console.log(o.foo); var o={foo:1,a:3};o.foo+=o.a,console.log(o.foo);
``` ```
@@ -350,7 +350,7 @@ console.log(result.code);
## Minify option structure ## Minify option structure
``` ```javascript
{ {
warnings: false, warnings: false,
parse: { parse: {
@@ -577,8 +577,7 @@ Examples:
```javascript ```javascript
// test.js // test.js
var globalVar; var globalVar;
function funcName(firstLongName, anotherLongName) function funcName(firstLongName, anotherLongName) {
{
var myVariable = firstLongName + anotherLongName; var myVariable = firstLongName + anotherLongName;
} }
``` ```
@@ -737,7 +736,7 @@ using `var` with `reduce_vars` (enabled by default) should suffice.
You can also use conditional compilation via the programmatic API. With the difference that the You can also use conditional compilation via the programmatic API. With the difference that the
property name is `global_defs` and is a compressor property: property name is `global_defs` and is a compressor property:
```js ```javascript
var result = uglifyJS.minify(fs.readFileSync("input.js", "utf8"), { var result = uglifyJS.minify(fs.readFileSync("input.js", "utf8"), {
compress: { compress: {
dead_code: true, dead_code: true,
@@ -749,7 +748,7 @@ var result = uglifyJS.minify(fs.readFileSync("input.js", "utf8"), {
``` ```
### Using native Uglify AST with `minify()` ### Using native Uglify AST with `minify()`
``` ```javascript
// example: parse only, produce native Uglify AST // example: parse only, produce native Uglify AST
var result = UglifyJS.minify(code, { var result = UglifyJS.minify(code, {
@@ -764,7 +763,7 @@ var result = UglifyJS.minify(code, {
// result.ast contains native Uglify AST // result.ast contains native Uglify AST
``` ```
``` ```javascript
// example: accept native Uglify AST input and then compress and mangle // example: accept native Uglify AST input and then compress and mangle
// to produce both code and native AST. // to produce both code and native AST.