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practice questions done #10

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practice questions done #10

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51 changes: 51 additions & 0 deletions index.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE HTML>
<html lang="en">
<head>
<meta charset="UTF-8" />

<script src="script.js" defer></script>
<title>

</title>
</head>

<body>
<div>
<button id="clickbutton"> Click me </button>
</div>
<div>
<button type="button" onClick="onClick()"> COUNTER </button>
<p>Number of clicks: <a id="clicks"> 0 </a> </p>
</div>

<form id="nameForm">

First name: <input type="text" name="firstname" value=""><br>
Last name: <input type="text" name="lastname" value=""><br>
<input type="submit" value="Submit">
<input type="button" onclick="nameFunction()" value="Reset form">

</form>


<p id="demo"></p>
<div>

<p id="place"></p>

<script>
<p id="demo2"></p>

try {
addalert = welcome => alert(welcome);
addalert("Welcome guest!");
}
catch(err) {
document.getElementById("demo2").innerHTML = err.message;
}
</script>

</div>

</body>
</html>
37 changes: 37 additions & 0 deletions script.js
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//Problem 1

var obj1 = "I am global";
function check(){
var obj2 = "I am local";
}

console.log(obj1);
console.log(obj2);

/* We got an error because. We can't reach local variables outside of the function.
They can only be accessed from within the function. */

//Problem 2

var counter = 0;
function onClick() {
counter += 1;
document.getElementById("clicks").innerHTML = counter;
};

//Problem 3

function alertFunction(){
alert("the user has clicked!")
}

document.getElementById("clickbutton").addEventListener("click", alertFunction);

//Problem 4

function nameFunction() {
var x = document.getElementById("nameForm");
document.getElementById("demo").innerHTML = x;

document.getElementById("nameForm").reset();
}