CODEWITHSUNDEEP
javascriptunderscore.jslodash
David R
David R

Reputation: 15639

Unable to pass extra argument with UnderscoreJS's each function

I'm trying to pass an additional object named modelObj to underscore's _.each function where as I'm not getting the context inside the loop.

My code goes like this,

showHideBudget: function(contentObj, modelObj){ 
   _.each(contentObj.find('.budgetSec'), function(item){ 
       // ===> Unable to reference modelObj here <===

       budgetFlag = true;
       return;
    }, modelObj)
 })

Can someone help?

Edit - Here is what I've made it to work.

Finally found what went wrong, It seems I need to pass both this and modelObj to make it work, (like this).

showHideBudget: function(contentObj, modelObj){ 
   _.each(contentObj.find('.budgetSec'), function(item){ 
       // ===> Unable to reference modelObj here <===

       budgetFlag = true;
       return;
    }, modelObj, this)
 })

Upvotes: 0

Views: 84

Answers (2)

madeyejm
madeyejm

Reputation: 502

From my understanding, that third argument is what this is bound to within your iteratee function. You should be able to get the reference to modelObj through this that function that's called for each element of the result of contentObj.find('budgetSec').

Reference: What is context in _.each(list, iterator, [context])?

Upvotes: 0

Alexandre Elshobokshy
Alexandre Elshobokshy

Reputation: 10922

Try it this way instead. You should pass the object to the _.each

showHideBudget: function(contentObj, modelObj){ 
   _.each(contentObj.find('.budgetSec'), function(item){     
       budgetFlag = true;
       return;
    }, modelObj);
 }

Upvotes: 1

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