Underscore.js is a javascript library that is capable enough to handle arrays, strings, objects, map, set very easily and efficiently. The _.isDate() function in underscore.js is used to tell if the given object is a date object or not.
Syntax:
_.isDate(object);
Parameters: It takes only one parameter i.e the object.
Return: This function returns a boolean value. The value is true is the object is date object else it is false.
Note: Please Link the underscore CDN before using this code directly in the browser through the code.
Example 1:
<!DOCTYPE html>
<html>
<head>
<script src =
"https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore-min.js" >
</script>
</head>
<body>
<script>
let date=new Date()
let str="9/9/9";
console.log(_.isDate(date));
console.log(_.isDate(str));
</script>
</body>
</html>
Output:
Example 2:
<!DOCTYPE html>
<html>
<head>
<script src =
"https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore-min.js" >
</script>
</head>
<body>
<script>
let date1=new Date();
let date2="09-jan-1888"
let boolDate1=_.isDate(date1);
let boolDate2=_.isDate(date2);
if(boolDate1)
console.log(
`_.isDate function returns ${boolDate1} \n date is: ${date1}`)
else
console.log(
`_.isDate function returns ${boolDate1}
\n ${data1} is not a date object`)
if(boolDate2)
console.log(
`_.isDate function returns ${boolDate2} \n date is ${date2}`)
else
console.log(
`_.isDate function returns ${boolDate2}
\n ${date2} is not a date object`)
</script>
</body>
</html>
Output:
