How to truncate string using meteor and handlebars?

问题

In jinja2(python) template engine there is a simple thing for truncating strings:

{{ fooText|truncate(200) }}

Does meteor(handlebars) provides something like this?

回答1:

I never use | on spacebars (the engine used on meteor template), but you can do a helper to accomplish this(for example a global Template.registerHelperr).

Template.registerHelper('text', function(passedString) {
    var fooText = passedString.substring(0,1); //same as truncate.
    return new Spacebars.SafeString(fooText)
});

And use it like {{ text myString}}

Here we are using some Blaze and the substring method.

回答2:

I am using values as options, starting value as well as ending value passed as arguments form template. Try this:

Handlebars.registerHelper('trimString', function(passedString, startstring, endstring) {
   var theString = passedString.substring( startstring, endstring );
   return new Handlebars.SafeString(theString)
});

In template:

<p>{{{trimString value 0 300}}}</p>

it'll print first 300 characters of the value. Hope this help you.

来源：https://stackoverflow.com/questions/29476505/how-to-truncate-string-using-meteor-and-handlebars