Angular 7 hide particular attribute inside ngFor loop

Question

I'm using a ngFor loop angular 7 I need to a hidden particular attribute(example userNo and UserType ) inside a ngFor loop.

emailId: "afsageg@dgvsf"
groupName: "dfsfgfdg"
mobileNo: "+91fyrtyrtyty"
userId: "ttrur"
userName: "srurttuidharan"
userNo: 2
userType: "rrhjty"
userTypeDisplay: "Operator Maker"

<tr *ngFor="let key of formData | keyvalue" >
    <td [hidden]="key.userNo">{{key.key | titlecase}}</td>
    <td>{{key.value}}</td>
</tr>

Answer 1

<td [hidden]="key.key==='userNo'">{{key.key | titlecase}}</td>
<td [hidden]="key.key==='userNo'">{{key.value}}</td> <!--if you also want to hide the value -->

Or you can use *ngIf instead of [hidden]

I would also suggest to rename your key to object (or something less generic even) as each iteration of the *ngFor holds an object and not just the key (hence why you can access key AND value)

So something like:

<tr *ngFor="let obj of formData | keyvalue" >
    <td [hidden]="obj.key==='userNo'">{{obj.key | titlecase}}</td>
    <td [hidden]="obj.key==='userNo'">{{obj.value}}</td>
</tr>

Small Stackblitz to illustrate

Answer 2

emailId: "afsageg@dgvsf"
groupName: "dfsfgfdg"
mobileNo: "+91fyrtyrtyty"
userId: "ttrur"
userName: "srurttuidharan"
userNo: 2
userType: "rrhjty"
userTypeDisplay: "Operator Maker"

<tr *ngFor="let key of formData | keyvalue" >
    <td [hidden]="key.userNo === true">{{key.key | titlecase}}</td>
    <td>{{key.value}}</td>
</tr>

Answer 3

If you want hide an attribute you can do some like

<td [attrib]="key.userNo?'value':null">

If you want not show a text, you can do

<td>{{key.userNo?'':key.key | titlecase}}</td>

Others is use style.display

<td [style.display]="key.userNo?'none':null">

of *ngIf

<td *ngIf="!key.userNo">