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‎.gitignore

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**/.vs
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*.o
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*.obj
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*.gch
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*.pch
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.idea
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**/.idea
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**/.vscode
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**/.vs
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**/*.cbp
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**/cmake-build-release
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**/cmake-build-debug
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**/CMakeCache.txt

‎commit.sh

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git add --all
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git commit -m "commit"
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git push origin master

‎readme.md

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#Trash Script
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A very tiny JS-like script interpreter implemented throw JS.
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Less than 10KB (gziped)
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The primary purpose of TrashScript is to execute scripts in environments where ```eval``` and ```new Function``` are restricted, such as in browser extensions.
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TrashScript was originally designed for modules in the
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"[filecxx browser extension](https://github.com/filecxx/FileCentipede)" such as "Third-Party Query Interfaces," which can run custom scripts.
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While not all JavaScript syntax has been implemented, the majority of commonly used syntax is available.
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###Keywords: How to allow eval in chrome extension
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##Usage examples:
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###Config
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```
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TrashScript.config = {
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max_exec_limit:1000000 //default
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}
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```
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###Basic
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```
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var executor = TrashScript("Source code",function(e)
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{
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if(e.status === "error"){
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console.log(e);
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}else if(e.status === "complete"){
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console.log(e.result);
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}
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});
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executor.exec();
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```
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###Bind existing JavaScript functions or objects
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```
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TrashScript.bind("alert",function(arg){
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window.alert(arg);
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});
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```
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```
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TrashScript.bind({
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console:console,
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test:function(){},
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print:console.log,
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alert:alert,
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JSON:JSON
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});
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```
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###Context object for 'this'
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```
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var executor = TrashScript("function aaa(){alert(this)};return aaa()",function(e){...});
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executor.exec(window); //'this' is window
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```
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```
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var executor = TrashScript("function aaa(){alert(this)};return aaa()",function(e){...});
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executor.exec({}); //'this' is an empty object
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```

‎test/test.css

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.Button {
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font-size: 13px;
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display: inline-block;
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padding: 6px 12px 6px 12px;
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text-decoration: none;
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color: #393d3f;
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border: 1px solid #bcbebf;
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border-right-color: #a3a5a6;
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border-bottom-color: #a3a5a6;
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background: #E0DDDA;
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background: linear-gradient(to bottom,#eff0f1 0%,#e3e4e5 100%);
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box-shadow: 1px 1px 1px rgba(184,181,179,0.7),0 0 1px #E1DEDB inset;
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border-radius: 2px;
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cursor: pointer;
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user-select: none;
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}
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.Button:hover {
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border-color: #909293;
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background: #DAD7D4;
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background: linear-gradient(to bottom,#eaebec 0%,#e0e1e2 100%)
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}
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.Button:active {
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transition: none;
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border-color: #979592;
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box-shadow: 1px 1px 1px rgba(184,181,179,0.7),0 2px 5px #bec0c1 inset;
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background: #d8dadb
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}
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.Button._disabled{
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color: #989593;
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background: #d7d9da;
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box-shadow: 1px 1px 1px rgba(184,181,179,0.7),0 0 1px #E1DEDB inset;
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border-color: #C3BDB9;
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cursor: progress;
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}

‎test/test.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>TrashScript Test</title>
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<link rel="stylesheet" href="test.css">
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<script src="../trashscript.js"></script>
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<style>
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body{
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background: #eff0f1;
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}
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body > .example{
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display: flex;
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width: 100%;
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}
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pre{
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width: 50%;
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box-sizing: border-box;
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background: white;
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border: 1px solid #bcbebf;
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}
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.result{
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box-sizing: border-box;
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width: 50%;
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padding: 20px;
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}
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</style>
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</head>
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<body>
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<div class="example">
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<pre><code>
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a = null
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b = a ? true: false
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return a + "\n\"" + 0xff + " " + b
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</code></pre>
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<div class="result">123213</div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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a = [1,2,[3,4]]
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alert(a[2][1])
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return a
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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n = 1;
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a = [1,2 + 2 * 3,-+-+n, !!n]
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b = function(a){
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return a
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}
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c = function(a){
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return a
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}(" 44")
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d = (function(a){
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return a
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})(" 55")
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e = (function(a){
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return a
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})
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return a + ":" + b(33) + c + d + e(" 77");
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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a = [1,2,]
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b = function(callback){
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return callback();
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}
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c = b(function(){
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return "array: ";
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})
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return JSON.stringify(c + ": " + a);
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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a = {a:11,b:true,c:"xxxx"+1};
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return JSON.stringify(a)
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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alert(123)
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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a = [1,"2",true]
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return a[0] + ":" + a[1] + ":" + a[2]
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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a = 2;
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if(a === "2"){
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alert(true)
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}else{
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return 1 + 2 * 2
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}
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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for(i=0;i<1100000;++i){}
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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a = 3;
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for(i=0,y=2;i < a,y<1;++i,++y){
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if(i === 1){
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print("continue")
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continue
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}else{
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print("bbb" + i)
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}
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print(i)
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++i
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}
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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a = 3;
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while(a < 10)
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{
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print(a)
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++a
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print("++a:" + a)
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}
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<div class="example">
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<pre><code>
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var cc = true
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var obj = {
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x:1,
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fn1:function(a,b)
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{
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function xx(n){
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//print(this)
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//print(cc)
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}
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print(this.x)
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//print(a + ":" + b)
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xx(11)
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alert(1)
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}
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}
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//console.log(this)
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obj.fn1(111,"aaa")
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</code></pre>
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<div class="result"></div>
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</div>
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<div class="Button">Run</div>
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<script>
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TrashScript.bind({
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console:console,
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test:function(){},
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print:console.log,
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alert:function(x){
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alert(x)
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},
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JSON:JSON
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});
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(function(){
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var buttons = document.querySelectorAll(".Button");
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var codes = document.querySelectorAll("pre");
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var results = document.querySelectorAll(".result");
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for(var i=0;i<buttons.length;++i)
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{
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(function(i)
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{
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var button = buttons[i];
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var result = results[i];
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var disabled = false;
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button.addEventListener("click",function()
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{
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if(disabled){
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return;
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}
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disabled = true;
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button.className = "Button _disabled";
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var context = TrashScript(codes[i].innerText,function(e)
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{
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if(e.status === "complete"){
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disabled = false;
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button.className = "Button";
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}else if(e.status === "error"){
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disabled = false;
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button.className = "Button";
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codes[i].style.borderColor = "red";
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}
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result.innerHTML = JSON.stringify(e) + "<br/>result: <br/>" + e.result;
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});
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context.exec(window);
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});
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})(i);
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}
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})();
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</script>
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</body>
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</html>

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