JavaScript Tutorial

The<span style=”color:#cf2e2e” class=”tadv-color”> pop()</span> method in JavaScript removes an element from the rear of the element. What if we want to remove element from the front of the JavaScript array?The JavaScript has a special method in the array class that removes just one element from the front of the array. It is the<span style=”color:#cf2e2e” class=”tadv-color”> … Read more

Sometimes you must push an element at the front of the array. This is not possible with the regular <span style=”color:#cf2e2e” class=”tadv-color”>push()</span> method of the array class.Fortunately, JavaScript has a function called<span style=”color:#cf2e2e” class=”tadv-color”> unshift()</span> that push the elements at the front of the array.The shift method can be used to push single element two … Read more

The JavaScript<span style=”color:#cf2e2e” class=”tadv-color”> pop()</span> method is to remove an element from the rear end of the array.The <span style=”color:#cf2e2e” class=”tadv-color”>pop()</span> method deletes just one element from the array. The element is topmost element of the array.In this example, we will pop() just one element from the array and store that element in a variable … Read more

The JavaScript <span style=”color:#a30000″ class=”tadv-color”>push()</span> method is part of array class. It pushes an element at the end of the array.It is possible to push more than one element at the same time using this method.The types of items that you can push using <span style=”color:#a30a00″ class=”tadv-color”>push()</span> method are single element multiple element sub arrays … Read more

JavaScript programming treat the strings as array and each character of the string has an index.Suppose we want to know the character at index 1. The JavaScript string class has method called <span style=”color:#a30f00″ class=”tadv-color”>charAt()</span> that returns the character at a index from the string.The <span style=”color:#a33100″ class=”tadv-color”>charAt(1) </span>will return a character from string at … Read more

The <span style=”color:#a30500″ class=”tadv-color”>join()</span> method from string class, join the characters or words of a string.This method is useful in some operations where we have to split the string into an array. The<span style=”color:#a30500″ class=”tadv-color”> join()</span> will concatenate it into a string again.The example program for join operation is given below.The above script will join … Read more

In previous example, we saw how JavaScript treat string as an array and allow us to access its character using indexOf() method.But sometimes, there are more than one occurrence of a character in the string. To know the index of last occurrence of a string. JavaScript has <span style=”color:#a30500″ class=”tadv-color”>lastIndexOf()</span> method in the string class.Here … Read more

The JavaScript string has some of the properties of array. You may access a character of the string using index.In order to find the correct index of a character , you can use <span style=”color:#a31d00″ class=”tadv-color”>indexOf()</span> method of string class.Here is an example program to demonstrate the usage of this method.The above program will result … Read more

In JavaScript programming, sometimes you wish to change the characters of a string to lowercase. You can do this with the help of <span style=”color:#a30000″ class=”tadv-color”>toLowerCase()</span> method of JavaScript class String.Here is the example program in which a string in uppercase is converted to lowercase using <span style=”color:#a31800″ class=”tadv-color”>toLowerCase() </span>method.Output of the above program

The toUpperCase() method is member of class String. This function converts all the characters of a string into uppercase.Here is an example program with output:Output of the Above Program