template.html
views.py
<!DOCTYPE html>
<html>
<body>
<h3>Without escapejs:</h3>
<button onclick="alert('{{ var1 }}')">Click me</button>
<h3>With escapejs:</h3>
<button onclick="alert('{{ var1|escapejs }}')">Click me</button>
<p>Try clicking both buttons. The JavaScript without the escapejs filter will raise an error.
<p>In views.py you can see what the var1 variable looks like.</p>
</body>
</html>
from django.http import HttpResponse
from django.template import loader
def testing(request):
template = loader.get_template('template.html')
context = {
'var1': 'John\nDoe',
}
return HttpResponse(template.render(context, request))