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Learn how to display the degree symbol of the temperature with Unicode character, HTML entity or the SUP tag in JavaScript.
how to display the degree of a temperature at the top right of the number ?
To display the degree symbol at the top right of the temperature, you can use the Unicode character \u00B0. In HTML, you can use the HTML entity ° or the sup tag with the degree symbol. Here's an example in JavaScript:
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let temperature = 25;
let result = temperature + '\u00B0';
console.log(result); // Output: "25°"
In HTML, you can use the sup tag with the degree symbol like this:
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<p>Temperature: 25<sup>°</sup></p>
This will display the temperature value with the degree symbol at the top right of the number.
👩💻 is this possible via css?
Yes, it is possible to display the degree symbol at the top right of a temperature value using CSS. You can use the ::after pseudo-element to add the degree symbol and position it using CSS. Here's an example:
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<p class="temperature">25</p>
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.temperature::after {
content: '\00B0';
position: relative;
top: -0.5em;
left: 0.1em;
font-size: 70%;
}
In the CSS code above, we use the ::after pseudo-element to add the degree symbol to the end of the temperature value using the content property. We then use the position, top, and left properties to position the degree symbol at the top-right corner of the temperature value. Finally, we use the font-size property to reduce the size of the degree symbol so that it looks more balanced with the temperature value.
This should result in displaying the temperature value with the degree symbol at the top right of the number using CSS.
👩💻 is is possible to add a text at the top right corner instead of degree ?
Yes, it is possible to add text at the top right of a temperature value using CSS. You can use the ::after pseudo-element and the content property to add the desired text, and then position it using CSS. Here's an example:
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<p class="temperature">25</p>
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.temperature::after {
content: 'C';
position: relative;
top: -0.5em;
left: 0.1em;
font-size: 70%;
font-weight: bold;
}
In the CSS code above, we use the ::after pseudo-element to add the text "C" to the end of the temperature value using the content property. We then use the position, top, and left properties to position the text at the top-right corner of the temperature value. Finally, we use the font-size and font-weight properties to style the text.
This should result in displaying the temperature value with the desired text at the top right of the number using CSS.
👩💻 Is it possible to add a group of hTML in the top right corner (text and URL)? I mean to avoid to hard code this value in css
Yes, it is possible to add a group of HTML elements containing text and a URL in the top right corner of an element using CSS. You can wrap your HTML elements inside a container element and add it after the temperature element using the ::after pseudo-element. Here's an example:
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<p class="temperature">25</p>
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.temperature::after {
content: '';
position: absolute;
top: 0;
right: 0;
display: flex;
flex-direction: column;
align-items: flex-end;
justify-content: flex-start;
font-size: 70%;
}
.temperature::after span {
font-weight: bold;
}
.temperature::after a {
color: blue;
text-decoration: underline;
}
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let container = document.createElement('div');
let span = document.createElement('span');
let link = document.createElement('a');
span.textContent = 'C';
link.textContent = 'Source';
link.href = 'https://www.example.com';
container.appendChild(span);
container.appendChild(link);
let temperature = document.querySelector('.temperature');
temperature.appendChild(container);
In the CSS code above, we use the ::after pseudo-element to add an empty container element after the temperature element using the content property. We then use CSS flexbox properties to position the container at the top-right corner of the temperature element and align its child elements. We also use the font-size property to reduce the size of the text so that it looks more balanced with the temperature value.
In the JavaScript code, we create a container element, a span element for the temperature symbol, and an a element for the URL. We then set the text content and URL of the span and a elements, and append them to the container element. Finally, we select the temperature element using JavaScript and append the container element as its child.
This should result in displaying the temperature value with the wrapped HTML elements at the top right of the number using CSS and JavaScript. Note that if you want to change the text or URL dynamically, you need to use JavaScript to modify the content of the span and a elements.
How can I loop an object in javascript
You can loop through the properties of an object in JavaScript using a for...in loop or Object.keys() method. Here are examples of both:
Using for...in:
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const obj = { a: 1, b: 2, c: 3 };
for (let key in obj) {
console.log(key, obj[key]);
}
Using Object.keys():
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const obj = { a: 1, b: 2, c: 3 };
Object.keys(obj).forEach(key => {
console.log(key, obj[key]);
});
Both methods will loop through the keys of the object and allow you to access their values.
how to add two alerts on one prompt in javascript for html
You can create two alerts that show one after the other using JavaScript. You can use the alert function twice in your code. Here's an example:
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// This function shows two alerts in sequence
function showAlerts() {
alert("This is the first alert!");
alert("This is the second alert!");
}
// Call the function to execute the alerts
showAlerts();
In your HTML file, you can include this JavaScript code within a <script> tag or link to an external JavaScript file. When you run this code, the first alert will appear, and after you close it, the second alert will appear.
For example, here’s how you might include it in an HTML document:
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Two Alerts Example</title>
<script>
function showAlerts() {
alert("This is the first alert!");
alert("This is the second alert!");
}
</script>
</head>
<body>
<button onclick="showAlerts()">Show Alerts</button>
</body>
</html>
When you click the button, it will trigger the alerts.
what's the not equal comparison operator?
The not equal comparison operator is used to check if two values are not equal to each other. In JavaScript, the operator is != or !==.
Here's a simple example:
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let a = 5;
let b = 10;
if (a != b) {
console.log("a is not equal to b");
}
In this example, the console will output "a is not equal to b" because 5 is not equal to 10.
You can also use !== which checks for both value and type. For example:
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let x = '5';
let y = 5;
if (x !== y) {
console.log("x is not strictly equal to y");
}
In this case, the condition is true because one is a string and the other is a number.
👩💻 and or?
In JavaScript, and and or are used as logical operators to combine conditions.
and operator is represented by &&. It returns true if both conditions are true.or operator is represented by ||. It returns true if at least one of the conditions is true.Here are some simple examples:
And Operator (&&):
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let a = 5;
let b = 10;
if (a > 0 && b > 0) {
console.log("Both a and b are positive numbers.");
}
In this example, the console will output "Both a and b are positive numbers." because both conditions are true.
Or Operator (||):
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let a = 5;
let b = -10;
if (a > 0 || b > 0) {
console.log("At least one of a or b is a positive number.");
}
In this case, the console will output "At least one of a or b is a positive number." because the first condition is true, even though the second condition is false.
👩💻 how to create a variable that check if two value are not equal?
To create a variable that checks if two values are not equal in JavaScript, you can use the not equal operator (!= or !==). You can assign the result of this comparison to a variable.
Here's an example:
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let value1 = 10;
let value2 = 20;
// Using != (non-strict not equal)
let areNotEqual = value1 != value2;
console.log(areNotEqual); // This will output: true
In this example, areNotEqual will be true because value1 (10) is not equal to value2 (20).
If you want to use the strict not equal operator (!==), which checks both value and type, you can do it like this:
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let value1 = '10'; // a string
let value2 = 10; // a number
// Using !== (strict not equal)
let areStrictlyNotEqual = value1 !== value2;
console.log(areStrictlyNotEqual); // This will output: true
In this case, areStrictlyNotEqual is also true because the types of value1 and value2 are different.
what is \r\n
\r\n is a sequence of characters used to represent a new line or line break in many programming environments, especially in Windows systems.
Here's a breakdown of what it means:
\r is the carriage return character, which moves the cursor to the beginning of the line.\n is the line feed character, which moves the cursor down to the next line.When you see \r\n together, it means that to create a new line, the system first returns the cursor to the start of the line (carriage return), then moves it down to the next line (line feed).
You can use it in JavaScript like this:
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const string = "Hello, World!\r\nThis is a new line.";
console.log(string);
When printed, this will output:
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Hello, World!
This is a new line.
For more details, you can refer to MDN Web Docs on newline characters.
how to use ".innerhtml"
The .innerHTML property in JavaScript is used to get or set the HTML content inside an element. Here’s how you can use it:
You can use .innerHTML to retrieve the HTML inside an element. For example:
// Assuming there's a div with the id "myDiv" let content = document.getElementById("myDiv").innerHTML; console.log(content); // This will log the HTML inside the div
You can also use .innerHTML to change the HTML inside an element. For example:
// Assuming there's a div with the id "myDiv" document.getElementById("myDiv").innerHTML = "<p>This is new content!</p>";
Here’s a simple example that shows both getting and setting innerHTML:
<!DOCTYPE html> <html lang="en"> <body> <div id="myDiv">Original Content</div> <button onclick="changeContent()">Change Content</button> <script> function changeContent() { // Get the original content let originalContent = document.getElementById("myDiv").innerHTML; console.log("Original Content:", originalContent); // Set new content document.getElementById("myDiv").innerHTML = "<p>This is new content!</p>"; } </script> </body> </html>
In this example, when you click the button, it will log the original content and change it to new content.
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