This article will show you how to use the math object to calculate the absolute value of an input.
As a reminder, the absolute value of a number ignores the sign - assumes all digits are 0 or more and returns that number. To use the absolute value method of the Math object, here is the syntax:
Math.abs (inputVal);
Since we are using the Math object, we will start with Math. The absolute value method is the abbreviation abs. The set of brackets calls the method of the input value inside the brackets and returns the absolute value.
If you enter a string, it returns NaN. A NULL value would return 0 and positive numbers or n negative, of course, would return the positive number.
Conclusion
That’s it! Now you can use the Math object to calculate the absolute value of a number. Here are some articles that can help you figure out what to learn next:
- JavaScript random number: Complete guide
- JavaScript parseInt: a step by step guide
- JavaScript countdown: a tutorial
- JavaScript toString
- JavaScript toUpperCase and toLowerCase
Javascript Absolute Value absolute: Questions
How to get an absolute file path in Python
3 answers
Given a path such as "mydir/myfile.txt", how do I find the file"s absolute path relative to the current working directory in Python? E.g. on Windows, I might end up with:
"C:/example/cwd/mydir/myfile.txt"
Answer #1
>>> import os
>>> os.path.abspath("mydir/myfile.txt")
"C:/example/cwd/mydir/myfile.txt"
Also works if it is already an absolute path:
>>> import os
>>> os.path.abspath("C:/example/cwd/mydir/myfile.txt")
"C:/example/cwd/mydir/myfile.txt"
How to check if a path is absolute path or relative path in a cross-platform way with Python?
3 answers
UNIX absolute path starts with "/", whereas Windows starts with alphabet "C:" or "". Does python have a standard function to check if a path is absolute or relative?
Answer #1
os.path.isabs returns True if the path is absolute, False if not. The documentation says it works in windows (I can confirm it works in Linux personally).
os.path.isabs(my_path)
How to join absolute and relative urls?
3 answers
I have two urls:
url1 = "http://127.0.0.1/test1/test2/test3/test5.xml"
url2 = "../../test4/test6.xml"
How can I get an absolute url for url2?
Answer #1
You should use urlparse.urljoin :
>>> import urlparse
>>> urlparse.urljoin(url1, url2)
"http://127.0.0.1/test1/test4/test6.xml"
With Python 3 (where urlparse is renamed to urllib.parse) you could use it as follow:
>>> import urllib.parse
>>> urllib.parse.urljoin(url1, url2)
"http://127.0.0.1/test1/test4/test6.xml"
