angular - Javascript - convert value of object to uppercase - Stack Overflow

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I have an object in my Angular.io or IONIC

{name:"food panda", city:"selangor", phone:"0123456789"}

and use the following code but it's not working:

this.restaurant.name.toUpperCase();

I need to convert food panda to FOOD PANDA.

How can I do that?

I have an object in my Angular.io or IONIC

{name:"food panda", city:"selangor", phone:"0123456789"}

and use the following code but it's not working:

this.restaurant.name.toUpperCase();

I need to convert food panda to FOOD PANDA.

How can I do that?

• javascript
• angular
• ionic-framework

Share Improve this question Follow edited Mar 5, 2018 at 21:21 user9441114 asked Mar 5, 2018 at 18:26 JerryJerry 1,58311 gold badge2222 silver badges4343 bronze badges 3

• 6 toUpperCase() doesn't mutate the original. You need to save it back: this.restaurant.name = this.restaurant.name.toUpperCase(); – Mark Commented Mar 5, 2018 at 18:29
• Please share a Minimal, Complete, and Verifiable example – Ele Commented Mar 5, 2018 at 18:31
• Possible duplicate of Swap Case on javascript – Abhijit Kar ツ Commented Mar 5, 2018 at 18:34

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3 Answers 3

Sorted by: Reset to default 6

toUpperCase returns a new String, it doesn't modify the original

var restaurant = { name: "food panda", city: "selangor", phone: "0123456789" };

restaurant.name.toUpperCase();

console.log(restaurant.name);           // output: food panda

var restaurantName = restaurant.name.toUpperCase();

console.log(restaurantName);            // output: FOOD PANDA

toUpperCase() creates a copy of the string and changes that one to uppercase. If you want the original string to be changed, you will need to reassign the string:

this.restaurant.name = this.restaurant.name.toUpperCase();

You have to save the resulting value, toUpperCase() does not modify anything.

var d = {name:"food panda", city:"selangor", phone:"0123456789"};
var name = d.name.toUpperCase();

Working JSFiddle

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