templ

Regex based template engine with some nifty features. Fully compatibility with mustache templates while incorporating the ability to use simple logic within templates.

Features:

• Backtracking with ../ syntax
• Reference current array index (1-based) with {{#}}
• Ability to execute arbitrary javascript within template {{somenum.toFixed(3)}}
• this syntax for referencing current context

Caveats:

• Slower performance than tokenizer based engines (but still plenty fast)
• Ability to execute arbitrary javascript within template {{maliciousFunction()}}

Examples:

Data:

{
   first: "Bob",
   last: "Smith",
   dob: "3/2/1987",
   pets: [
      { name: "Rover", type: "dog", favorite: true },
      { name: "Kitty", type: "cat" },
      { name: "Goldy", type: "fish" }
   ]
}

Template:

{{first}} {{last}} is {{new Date(Date.now()-new Date(this.dob)).getFullYear()-1970}} years old.<br>
{{first}} has {{pets.length}} pet{{pets.length==1?"":"s"}}.<br>
{{#pets}}
{{name}} is a {{type}}{{#favorite}} and is {{../../first}}'s favorite pet{{/favorite}}.<br>
{{/pets}}

Results:

Bob Smith is 31 years old.
Bob has 3 pets.
Rover is a dog and is Bob's favorite pet.
Kitty is a cat.
Goldy is a fish.

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For more examples and a better understanding of templating in general see the mustache documentation at https://mustache.github.io/mustache.5.html