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"use strict"; #15

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63be168
"use strict";
akkiePro Feb 20, 2024
060eb34
module as .mjs
akkiePro Feb 20, 2024
ea205e5
module as .mjs
akkiePro Feb 20, 2024
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11 changes: 11 additions & 0 deletions 101_use_strict/index.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>use strict</title>
</head>
<body>
<script src="/101_use_strict/script.js"></script>
</body>
</html>
26 changes: 26 additions & 0 deletions 101_use_strict/script.js
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"use strict";
let a = 45;
console.log(a);

// 1. demo1 of restriction after using "use strict"
d = 28; // not allowed because strict mode is on.
// Uncaught ReferenceError: d is not defined


// 2. demo2 of restriction after using "use strict"
console.log(this);
function tryThis(num) {
console.log(num);
console.log(this); // undefined. bcz in strict mode this can't be used inside function.
}
tryThis(5);
let fun = () => {
console.log(this); // window object
};
fun();


/**
* Note:
* react uses strict mode by default.
*/
11 changes: 11 additions & 0 deletions 102_module.mjs/module1.mjs
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const a = "Akash";
const b = "akki";
const c = "Shruti";
const d = "zingur";
const e = "Disha";

export default b;
export {a};
export {c};
export {d};
export {e};
12 changes: 12 additions & 0 deletions 102_module.mjs/package.json
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{
"name": "102_module.mjs",
"version": "1.0.0",
"description": "",
"main": "script.mjs",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "",
"license": "ISC"
}
4 changes: 4 additions & 0 deletions 102_module.mjs/script.mjs
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import name, {a, c} from "./module1.mjs";
console.log(name);
console.log(a);
console.log(c);