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A safe template rendering engine for Node.
A short sample code first:
var wash = require('wash');
var source =
'My name is {{ name }}. I am {{ age }} years old.\n' +
'{% if age > 20 %}(Yes I am old enough.){% endif %}\n' +
'I have {{ len(kids) }} kids. They are {{ join(kids, ", ") }}.\n' +
'THEY ARE {% for k in kids %}{{ upper(k.value) }} {% endfor %}';
var context = {
name: 'John',
age: 30,
kids: ['Daniel', 'Paul', 'Mark']
};
var output = wash.render(source, context);
console.log(output);
What wash does here is to render the input source string with the provided context variables.
{{ name }}
prints out the value of name
variable (context.name). It becomes John
in this example.{{ age }}
does the same to age
variable. But this time it's a number.{% if age > 20 %} ... {% endif %}
prints (or execute) the string between if
and endif
tags only when name
is above 20
.{{ len(kids) }}
prints the number of elements in kids
collection. The collection can be an array or an object. In this example, kids
is an array with 3 string elements. So this outputs 3
.{{ join(kids, ", ") }}
joins the elements of kids
using separator of ", "
.{% for k in kids %} ... {% endfor %}
iterates kids
collection. Inside this loop, you can access each element using k
variable. So, {{ k.value }}
evaluates to the value of the current element.{{ upper(k.value) }}
converts the value of k
to uppercase characters.So, output will look like this.
My name is John. I am 30 years old.
I have 3 kids. They are Daniel, Paul, Mark.
THEY ARE DANIEL PAUL MARK
For more details on the template syntax, please see Template Syntax below.
Wash is safe. You can run untrusted template codes in Wash.
FAQs
a safe template rendering engine
We found that wash demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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