Mixing
Combine *ngFor interpolations to access global variable
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0
Using Angular I have created the following HTML:
<ng-container *ngFor="let question of questions.questions; let i = index">
<div *ngIf="i == counter">
<button *ngFor="let item of question | keyvalue; let buttonIndex = index" class="btn btn-lg btn-primary surveyButton" type="button" value={{item.value}} (tap)="makeSelection(item.value)">
{{item.value}}
<span>
{{prevSelection + buttonIndex}}
</span>
</button>
</div>
</ng-container>
I have global variables prevSelection1, prevSelection2, prevSelection3, and prevSelection4.
Using {{prevSelection + buttonIndex}}, I was hoping to display all four of these variables, however the concatenation within the interpolation is not working.
How can I solve this?
angular asked Jan 3 at 4:56
cfoster5cfoster5
528720
add a comment |
0
Using Angular I have created the following HTML:
<ng-container *ngFor="let question of questions.questions; let i = index">
<div *ngIf="i == counter">
<button *ngFor="let item of question | keyvalue; let buttonIndex = index" class="btn btn-lg btn-primary surveyButton" type="button" value={{item.value}} (tap)="makeSelection(item.value)">
{{item.value}}
<span>
{{prevSelection + buttonIndex}}
</span>
</button>
</div>
</ng-container>
I have global variables prevSelection1, prevSelection2, prevSelection3, and prevSelection4.
Using {{prevSelection + buttonIndex}}, I was hoping to display all four of these variables, however the concatenation within the interpolation is not working.
How can I solve this?
angular asked Jan 3 at 4:56
cfoster5cfoster5
528720
Can you create a demo to reproduce the issue?
– Just code
Jan 3 at 4:59
your question is not clear explain more clearly
– Soumya B. Athani
Jan 3 at 5:00
do you mean whats there inprevSelection1to be displayed after concatenation {{'prevSelection' + 1}} ?
– super cool
Jan 3 at 5:14
did you give this a try{{ this[prevSelection + buttonIndex]}}.
– super cool
Jan 3 at 5:22
please mention the type of prevSelection + buttonIndex in the question...
– Abhishek Gautam
Jan 3 at 6:10
add a comment |
0
0
0
0
Using Angular I have created the following HTML:
<ng-container *ngFor="let question of questions.questions; let i = index">
<div *ngIf="i == counter">
<button *ngFor="let item of question | keyvalue; let buttonIndex = index" class="btn btn-lg btn-primary surveyButton" type="button" value={{item.value}} (tap)="makeSelection(item.value)">
{{item.value}}
<span>
{{prevSelection + buttonIndex}}
</span>
</button>
</div>
</ng-container>
I have global variables prevSelection1, prevSelection2, prevSelection3, and prevSelection4.
Using {{prevSelection + buttonIndex}}, I was hoping to display all four of these variables, however the concatenation within the interpolation is not working.
How can I solve this?
angular asked Jan 3 at 4:56
cfoster5cfoster5
528720
Using Angular I have created the following HTML:
<ng-container *ngFor="let question of questions.questions; let i = index">
<div *ngIf="i == counter">
<button *ngFor="let item of question | keyvalue; let buttonIndex = index" class="btn btn-lg btn-primary surveyButton" type="button" value={{item.value}} (tap)="makeSelection(item.value)">
{{item.value}}
<span>
{{prevSelection + buttonIndex}}
</span>
</button>
</div>
</ng-container>
I have global variables prevSelection1, prevSelection2, prevSelection3, and prevSelection4.
Using {{prevSelection + buttonIndex}}, I was hoping to display all four of these variables, however the concatenation within the interpolation is not working.
How can I solve this?
angular angular asked Jan 3 at 4:56
cfoster5cfoster5
528720
asked Jan 3 at 4:56
cfoster5cfoster5
528720
asked Jan 3 at 4:56
cfoster5cfoster5
528720
asked Jan 3 at 4:56
cfoster5cfoster5
528720
asked Jan 3 at 4:56
cfoster5cfoster5
528720
528720
Can you create a demo to reproduce the issue?
– Just code
Jan 3 at 4:59
your question is not clear explain more clearly
– Soumya B. Athani
Jan 3 at 5:00
do you mean whats there inprevSelection1to be displayed after concatenation {{'prevSelection' + 1}} ?
– super cool
Jan 3 at 5:14
did you give this a try{{ this[prevSelection + buttonIndex]}}.
– super cool
Jan 3 at 5:22
please mention the type of prevSelection + buttonIndex in the question...
– Abhishek Gautam
Jan 3 at 6:10
add a comment |
Can you create a demo to reproduce the issue?
– Just code
Jan 3 at 4:59
your question is not clear explain more clearly
– Soumya B. Athani
Jan 3 at 5:00
do you mean whats there inprevSelection1to be displayed after concatenation {{'prevSelection' + 1}} ?
– super cool
Jan 3 at 5:14
did you give this a try{{ this[prevSelection + buttonIndex]}}.
– super cool
Jan 3 at 5:22
please mention the type of prevSelection + buttonIndex in the question...
– Abhishek Gautam
Jan 3 at 6:10
Can you create a demo to reproduce the issue?
– Just code
Jan 3 at 4:59
Can you create a demo to reproduce the issue?
– Just code
Jan 3 at 4:59
your question is not clear explain more clearly
– Soumya B. Athani
Jan 3 at 5:00
your question is not clear explain more clearly
– Soumya B. Athani
Jan 3 at 5:00
do you mean whats there in
prevSelection1 to be displayed after concatenation {{'prevSelection' + 1}} ?– super cool
Jan 3 at 5:14
do you mean whats there in
prevSelection1 to be displayed after concatenation {{'prevSelection' + 1}} ?– super cool
Jan 3 at 5:14
did you give this a try
{{ this[prevSelection + buttonIndex]}} .– super cool
Jan 3 at 5:22
did you give this a try
{{ this[prevSelection + buttonIndex]}} .– super cool
Jan 3 at 5:22
please mention the type of prevSelection + buttonIndex in the question...
– Abhishek Gautam
Jan 3 at 6:10
please mention the type of prevSelection + buttonIndex in the question...
– Abhishek Gautam
Jan 3 at 6:10
add a comment |
1 Answer
1
active
oldest
votes
0
You can create object and the try to use it.
selection = {
prevSelection1 :'abc',
prevSelection2 :'def',
prevSelection3 :'pqr',
prevSelection4 :'xyz',
}
<ng-container *ngFor="let question of questions.questions; let i = index">
<div *ngIf="i == counter">
<button *ngFor="let item of question | keyvalue; let buttonIndex = index" class="btn btn-lg btn-primary surveyButton" type="button" value={{item.value}} (tap)="makeSelection(item.value)">
{{item.value}}
<span>
{{selection['prevSelection' + buttonIndex]}}
</span>
</button>
</div>
</ng-container>
Hope this works for you
answered Jan 3 at 6:06
Ajay BarokarAjay Barokar
862
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
You can create object and the try to use it.
selection = {
prevSelection1 :'abc',
prevSelection2 :'def',
prevSelection3 :'pqr',
prevSelection4 :'xyz',
}
<ng-container *ngFor="let question of questions.questions; let i = index">
<div *ngIf="i == counter">
<button *ngFor="let item of question | keyvalue; let buttonIndex = index" class="btn btn-lg btn-primary surveyButton" type="button" value={{item.value}} (tap)="makeSelection(item.value)">
{{item.value}}
<span>
{{selection['prevSelection' + buttonIndex]}}
</span>
</button>
</div>
</ng-container>
Hope this works for you
answered Jan 3 at 6:06
Ajay BarokarAjay Barokar
862
add a comment |
0
You can create object and the try to use it.
selection = {
prevSelection1 :'abc',
prevSelection2 :'def',
prevSelection3 :'pqr',
prevSelection4 :'xyz',
}
<ng-container *ngFor="let question of questions.questions; let i = index">
<div *ngIf="i == counter">
<button *ngFor="let item of question | keyvalue; let buttonIndex = index" class="btn btn-lg btn-primary surveyButton" type="button" value={{item.value}} (tap)="makeSelection(item.value)">
{{item.value}}
<span>
{{selection['prevSelection' + buttonIndex]}}
</span>
</button>
</div>
</ng-container>
Hope this works for you
answered Jan 3 at 6:06
Ajay BarokarAjay Barokar
862
add a comment |
0
0
0
You can create object and the try to use it.
selection = {
prevSelection1 :'abc',
prevSelection2 :'def',
prevSelection3 :'pqr',
prevSelection4 :'xyz',
}
<ng-container *ngFor="let question of questions.questions; let i = index">
<div *ngIf="i == counter">
<button *ngFor="let item of question | keyvalue; let buttonIndex = index" class="btn btn-lg btn-primary surveyButton" type="button" value={{item.value}} (tap)="makeSelection(item.value)">
{{item.value}}
<span>
{{selection['prevSelection' + buttonIndex]}}
</span>
</button>
</div>
</ng-container>
Hope this works for you
answered Jan 3 at 6:06
Ajay BarokarAjay Barokar
862
You can create object and the try to use it.
selection = {
prevSelection1 :'abc',
prevSelection2 :'def',
prevSelection3 :'pqr',
prevSelection4 :'xyz',
}
<ng-container *ngFor="let question of questions.questions; let i = index">
<div *ngIf="i == counter">
<button *ngFor="let item of question | keyvalue; let buttonIndex = index" class="btn btn-lg btn-primary surveyButton" type="button" value={{item.value}} (tap)="makeSelection(item.value)">
{{item.value}}
<span>
{{selection['prevSelection' + buttonIndex]}}
</span>
</button>
</div>
</ng-container>
Hope this works for you
answered Jan 3 at 6:06
Ajay BarokarAjay Barokar
862
answered Jan 3 at 6:06
Ajay BarokarAjay Barokar
862
answered Jan 3 at 6:06
Ajay BarokarAjay Barokar
862
answered Jan 3 at 6:06
Ajay BarokarAjay Barokar
862
862
add a comment |
add a comment |
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Can you create a demo to reproduce the issue?
– Just code
Jan 3 at 4:59
your question is not clear explain more clearly
– Soumya B. Athani
Jan 3 at 5:00
do you mean whats there in
prevSelection1to be displayed after concatenation {{'prevSelection' + 1}} ?– super cool
Jan 3 at 5:14
did you give this a try
{{ this[prevSelection + buttonIndex]}}.– super cool
Jan 3 at 5:22
please mention the type of prevSelection + buttonIndex in the question...
– Abhishek Gautam
Jan 3 at 6:10