Compare two dates using JavaScript

In this article, we will compare the 2 dates in Javascript, along with understanding their implementation through the examples.

In JavaScript, we can compare two dates by converting them into numeric values to correspond to their time. First, we can convert the Date into a numeric value by using the getTime() function. By converting the given dates into numeric values we can directly compare them.

Example 1: This example illustrates the comparison of the dates using the getTime() function.

javascript

<script>

    // Current Date
    var g1 = new Date();
    var g2 = new Date();
    if (g1.getTime() === g2.getTime())
        document.write("Both  are equal");
    else
        document.write("Not equal");
    javascript: ;
</script>

Output:

Both are equal

Example 2: This example illustrates the comparison of the current date with the assigned date using the getTime() function.

Javascript

<script>
    var g1 = new Date();

    // (YYYY-MM-DD)
    var g2 = new Date(2019 - 08 - 03);
    if (g1.getTime() < g2.getTime())
        document.write("g1 is lesser than g2");
    else if (g1.getTime() > g2.getTime())
        document.write("g1 is greater than g2");
    else
        document.write("both are equal");
</script>

Output:

g1 is greater than g2

Example 3: This example illustrates the comparison of 2 given dates using the getTime() function.

Javascript

<script>
    var g1 = new Date(2019, 08, 03, 11, 45, 55);

    // (YYYY, MM, DD, Hr, Min, Sec)
    var g2 = new Date(2019, 08, 03, 10, 22, 42);
    if (g1.getTime() < g2.getTime())
        document.write("g1 is lesser than g2");
    else if (g1.getTime() > g2.getTime())
        document.write("g1 is greater than g2");
    else
        document.write("both are equal");
</script>

Output:

g1 is greater than g2

JavaScript is best known for web page development but it is also used in a variety of non-browser environments. You can learn JavaScript from the ground up by following this JavaScript Tutorial and JavaScript Examples.