add custom helper to handlebar template and use them
Add helper:
Handlebars.registerHelper ('truncate', function (str, len) {
if (str && str.length > len && str.length > 0) {
var new_str = str + " ";
new_str = str.substr (0, len);
new_str = str.substr (0, new_str.lastIndexOf(" "));
new_str = (new_str.length > 0) ? new_str : str.substr (0, len);
return new Handlebars.SafeString ( new_str +'...' );
}
return str;
});
Use helper: