You want to make sure the data can be accessed; otherwise you'll try to read from an undefined property. There are a few ways to do this:

```
<b>Customer name: </b> {{order?.customerName}}<br>
```

This will still display `Customer name:`

with nothing. Instead you may want to use `ngIf`

with `else`

to show a loading indicator or something like that.

```
<div class="img-right" *ngIf="order$ | async as order; else loading">
<b>Customer name: </b> {{order.customerName}}<br>
</div>
<div #loading>Loading...</div>
```

Note that `order`

probably shouldn't be an input. You will need an `order$`

property:

```
order$ = this._ordersService.getOrder(1);
```

The `| async`

takes care of the subscribe and unsubscribe for you.

Answer:1

You can use `?`

operator: `order?.customerName`

Answer:2

How can I check or receive a message when the a Unity WebGL app is finished with loading and ready for use? What I want is to run a JavaScript function of my Webinterface after the WebGL App is ready.

How can I check or receive a message when the a Unity WebGL app is finished with loading and ready for use? What I want is to run a JavaScript function of my Webinterface after the WebGL App is ready.

- unity webgl javascript callback
- unity webgl javascript communication
- unity webgl javascript error
- unity webgl javascript
- unity webgl javascript api
- unity webgl js
- unity webgl call javascript function
- unity webgl call javascript from c#
- unity webgl execute javascript
- unity webgl node.js
- unity webgl asm.js
- unity webgl three.js
- unity webgl unityloader.js
- unity webgl call external javascript
- unity webgl javascript 連携

I am really new to vueJS. I try to get two input value, adding them together, and show the result. I found it is really wired, because when number1 minus number3, or number1 multiplied number2, or ...

I am really new to vueJS. I try to get two input value, adding them together, and show the result. I found it is really wired, because when number1 minus number3, or number1 multiplied number2, or ...

- calculating numbers with powers
- calculating numbers with exponents
- calculating numbers with excel
- calculating with numbers crossword clue
- calculating with numbers
- calculating with numbers crossword
- calculating numbers on a rental property
- calculating numbers from percentages
- calculating numbers of combinations
- calculating numbers in scientific notation
- calculating numbers of subatomic particles
- calculating numbers in standard form
- calculating numbers from ratios
- calculating numbers in brackets
- calculating numbers of atoms
- calculating numbers in numerology
- calculating numbers in your head
- calculating numbers of subatomic particles questions
- calculating numbers in between
- calculating numbers in access

I need your help, While the code below works great to dynamically switch my div content, the problem now is that the javascript code does not hide the user's previous selection. Any ideas on how to ...

I need your help, While the code below works great to dynamically switch my div content, the problem now is that the javascript code does not hide the user's previous selection. Any ideas on how to ...

- jquery show hide dynamic content

I have solved the seventh problem of Euler, it says: By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the 10 001st prime number? ...

I have solved the seventh problem of Euler, it says: By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the 10 001st prime number? ...