symfony 3的twig模板功能是否

Question

this function

function test(){
         var distance =calculateHaversineFormula({{lat}}, {{lng}},{{  geocode.latitude}}, {{ geocode.longitude }} );
                    {%  if distance < 1000 %}
                    console.log(distance);
                    {%  endif  %}

    }

function calculate.. returns d (distance), so I want to make constant for this.. then i want to filtrate to get all distances who has less than 1000, but I got error Variable "distance" does not exist in default\\index.html.twig at line 41.

Without if

 var distance =calculateHaversineFormula({{lat}}, {{lng}},{{  geocode.latitude}}, {{ geocode.longitude }} ); 
            console.log(distance);

This works fine.. So what is wrong with if?

Answer 1

I would suggest you to rewrite your condition in JS, like so:

function test(){
  var distance =calculateHaversineFormula({{lat}}, {{lng}},{{geocode.latitude}}, {{ geocode.longitude }} );
  if distance < 1000 {
    console.log(distance);
  }
}