Question

130

How to know if all javascript object values are true?

rated 0 times [ 131] [ 1] / answers: 1 / hits: 85166 / 11 Years ago, fri, june 14, 2013, 12:00:00

In JavaScript, I need to know if all object items are set to true.

If I have the following object:

var myObj = {title:true, name:true, email:false};

I could write something like this :

 if(myObj.title && myObj.name && myObj.email){

 /*Some code */

};

But I am looking for the simplest way to write it. eg :

if(myObj all is true){

/*Some code */

};

I might have another object with 10-20 items inside it, and will need to know if all are true.

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cadendericki

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answered 11 Years ago alorafrancisl · Accepted Answer

How about something like:

    function allTrue(obj)

    {

      for(var o in obj)

          if(!obj[o]) return false;

        

      return true;

    }

    

    var myObj1 = {title:true, name:true, email:false};

    var myObj2 = {title:true, name:true, email:true};



    document.write('<br />myObj1 all true: ' + allTrue(myObj1));

    document.write('<br />myObj2 all true: ' + allTrue(myObj2));

A few disclaimers: This will return true if all values are true-ish, not necessarily exactly equal to the Boolean value of True. Also, it will scan all properties of the passed in object, including its prototype. This may or may not be what you need, however it should work fine on a simple object literal like the one you provided.