How to use if statements in Underscore.js templates ?
Underscore.js is a javascript library that provides helper functions in functional programming without extending the built-in-objects. This package consists of 100 functions like map, filter, etc.
We can install this by using npm.
npm install underscore
Syntax:
const _ = require('underscore');Approach:
Write your mark-up code regarding the requirement.
We should always place the underscore.js code inside the <script> tag.
In this case, Write the if and else logic based upon a problem statement.
Once the code is error-free we can surf the file as usual.
In this way, we need to write the code in <script> tag;
Example:
<!DOCTYPE html><html> <head> <script type="text/javascript" src= </script></head> <body> <script type="text/javascript"> <% if (typeof (number) != "undefined") {%> <span class="number"><%= number %></span> <%} else { print("Number doesn't exist"); } %> </script></body> </html> |
Output:
