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learn this, but not very clear

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This commit is contained in:
mhrooz
2024-06-02 15:32:46 +02:00
parent e9d6b3ad15
commit 1e55406e8f
3 changed files with 55 additions and 0 deletions
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21
4.4this/index.html Normal file
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<!DOCTYPE html>
<html>
<head>
<!-- add mocha css, to show results -->
<script>
// chai has a lot of stuff, let's make assert global
</script>
</head>
<body>
<!-- the script with tests (describe, it...) -->
<!-- <script src="t1.js"></script> -->
<script src="t2.js"></script>
<!-- the element with id="mocha" will contain test results -->
<!-- run tests! -->
</body>
</html>

18
4.4this/t1.js Normal file
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let calculator={
a: 0,
b: 0,
read(){
this.a = prompt("please type a");
this.b = prompt("please type b");
},
sum(){
return Number(this.a) + Number(this.b);
},
mul(){
return this.a * this.b;
}
};
calculator.read();
alert(calculator.sum());
alert(calculator.mul());

16
4.4this/t2.js Normal file
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let ladder = {
step: 0,
up() {
this.step++;
return this;
},
down() {
this.step--;
return this;
},
showStep: function() { // shows the current step
alert( this.step );
return this;
}
};
ladder.up().up().down().showStep().down().showStep(); // shows 1 then 0