CODEWITHSUNDEEP
javascriptjquery
Calvinjwala
Calvinjwala

Reputation: 1

Utilizing a string from an array to a function as a variable

I want to use some string from an array and pass it into a function. The string has the same name as a global variable. From there, I want to set the output to the variable name. It is being passed to a slider function where the variable should update upon any changes.

I've tried passing it through [window] or eval(), but it does not work. Ideally, in the createSliders() function, on slide the global var would update. 

i_current_annual_volume = 1000000;

let sliderArr = [{
   input: "i_current_annual_volume" (or window[i_current_annual_volume]),
   value: 1000000,
   min: 1000,
   max: 10000000,
   step: 1000,
}];

function createSliders() {
  for ( var i = 0; i < sliderArr.length; i++ ){
    let slider_name = "#slider-" + [i + 1];
    let handle_name = "#custom-handle-" + [i + 1];
    let input_field = sliderArr[ i ].input;

    $( slider_name ).slider({
      value: sliderArr[ i ].value,
      min: sliderArr[ i ].min,
      max: sliderArr[ i ].max,
      step: sliderArr[ i ].step,
      create: function() {
        $( handle_name ).text( $( this ).slider( "value" ) );
      },
      slide: function( event, ui ) {
        $( handle_name ).text( ui.value );
        input_field = ui.value;
      },
      stop: function(){
        loadNumbers();
      }
    });
  }
};



When I remove the quotes in the sliderArr, the output is 1000000. I need it to be i_current_annual_volume.

Upvotes: 0

Views: 52

Answers (2)

Calvinjwala
Calvinjwala

Reputation: 1

Thanks for the help. I ended up creating an object array {} and passing the variable as string. That wound up being a simpler solution.

Upvotes: 0

Barmar
Barmar

Reputation: 780869

You said you tried to use window, but you didn't show how you tried to do it. Global variables are properties of the window object. See Use dynamic variable names in JavaScript

Change

        input_field = ui.value;

to

        window[input_field] = ui.value;

Upvotes: 1

Related Questions