JavaScript gives an array of strings. Leave only lines that start with http:// in this array.

You can filter an array of strings to only include lines that start with http:// in JavaScript using the filter method and a simple condition. Here's an example:

In the above code, the filter method is used to create a new array httpLines that contains only the lines that start with http://.

The startsWith method is used to check the beginning of each string in the array. The resulting httpLines array will contain only the lines that match the specified condition.