Author: John Au-Yeung

Sometimes, we want to replace a window’s URL hash with another response with JavaScript.

In this article, we’ll look at how to replace a window’s URL hash with another response with JavaScript.

How to replace a window’s URL hash with another response with JavaScript?

To replace a window’s URL hash with another response with JavaScript, we can set the window.location.hash property.

For instance, we write

window.location.hash = "#food";

to replace the hash of the current URL with #food.

Conclusion

To replace a window’s URL hash with another response with JavaScript, we can set the window.location.hash property.

Sometimes, we want to set time with date in moment.js and JavaScript.

In this article, we’ll look at how to set time with date in moment.js and JavaScript.

How to set time with date in moment.js and JavaScript?

To set time with date in moment.js and JavaScript, we use the set method.

For instance, we write

const hours = 15;
const minutes = 32;
const date = moment("2022-05-21").set("hour", hours).set("minute", minutes);

to call “setwith thehoursandminutes` to set the hours and minutes.

The first argument is the unit and the 2nd argument is the value to set.

A new moment object is returned with the new time value.

Conclusion

To set time with date in moment.js and JavaScript, we use the set method.

Sometimes, we want to get the second to last item of an array with JavaScript.

In this article, we’ll look at how to get the second to last item of an array with JavaScript.

How to get the second to last item of an array with JavaScript?

To get the second to last item of an array with JavaScript, we use the array at method.

For instance, we write

const arr = [1, 2, 3, 4];
const secondLast = arr.at(-2);

to call arr.at with -2 to return the 2nd last item of the arr array.

Therefore, secondLast is 3.

Conclusion

To get the second to last item of an array with JavaScript, we use the array at method.

Sometimes, we want to split string with white space with JavaScript.

In this article, we’ll look at how to split string with white space with JavaScript.

How to split string with white space with JavaScript?

To split string with white space with JavaScript, we use the string split method.

For instance, we write

const arr = w.split(/(\s+)/).filter((e) => e.trim().length > 0);

to call split with a regex that matches whitespaces.

Then we call filter with a function that returns the strings that has length bigger than 0 after trimming the starting and ending whitespaces with trim.

/(\s+)/ matches whitespaces in string w and use them as separators.

Conclusion

To split string with white space with JavaScript, we use the string split method.