Method for adding elements to an array of JavaScript _ basic knowledge

This article mainly introduces how to add elements to JavaScript arrays. Here are some examples of JS Array Operations. For more information, see Add the new element-unshift () at the beginning of the array ()
Source code:

Click the button to add elements to the array.
Try it《script》function myFunction(){var fruits = ["Banana", "Orange", "Apple", "Mango"];fruits.unshift("Lemon","Pineapple");var x=document.getElementById("demo");x.innerHTML=fruits;}《script》
Note: The unshift() method does not work properly in Internet Explorer 8 and earlier, the values will be inserted, but the return value will be undefined.
  

Test results:

Lemon,Pineapple,Banana,Orange,Apple,Mango

Add an element-splice () at location 2nd of the array ()
Source code:

​
Click the button to add elements to the array.
​Try it​《script》function myFunction(){var fruits = ["Banana", "Orange", "Apple", "Mango"];fruits.splice(2,0,"Lemon","Kiwi");var x=document.getElementById("demo");x.innerHTML=fruits;}《script》​     

Test results:

Banana,Orange,Lemon,Kiwi,Apple,Mango

Add a new element at the end of the array-push ()
Source code:

​
Click the button to add a new element to the array.
​Try it​《script》var fruits = ["Banana", "Orange", "Apple", "Mango"];​function myFunction(){fruits.push("Kiwi")var x=document.getElementById("demo");x.innerHTML=fruits;}《script》​   

Test results:

Banana,Orange,Apple,Mango,Kiwi