In the previous article "JavaScript restricts the input box to only allow integers and decimal points (two methods)", I introduced how to use javascript to restrict the input box to only allow integers and decimal points. Interested Friends can learn about it~

What this article will explain is to teach you how to use JavaScript to delete the last item from an array.

Below I will explain how to use JavaScript to delete the last item from an array through 3 examples:

First sample code:

Note: This example uses the splice() method to remove the last item from the array.

     
  
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The running results are as follows:

• JavaScript Array splice() method adds/removes items to/from the array and returns The item that was removed; this method mutates the original array.

Second sample code:

Note: This example uses the pop() method to remove the last item from the array.

     
  
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The running results are as follows:

• The JavaScript Array pop() method will delete the arrayObject , decrements the array length by 1 and returns the value of the element it removed. If the array is already empty, pop() does not modify the array and returns an undefined value.
  

Third code example:

Note: This example does not remove the last item from the array, instead using The slice() method returns a new array with the items removed.

     
  
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The running results are as follows:

• The JavaScript Array slice() method can return selected elements from an existing array , the slice() method can extract a certain part of the string and return the extracted part as a new string; the slice() method does not change the original array.

Finally, I would like to recommend "JavaScript Basics Tutorial" ~ Welcome everyone to learn ~

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