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 markup 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: This example shows the use of the above-explained approach.
html
<!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:
Number doesn't exist
Please Login to comment...