Angular4: Disable button in ngFor after click












2














I have a <button> in a ngFor loop and I want it to be disabled after the user clicks on the button. There is a button for each element of the loop so I have to differentiate them using a different boolean value for each of them.



Here is a code snippet from the html:



<div class="card" *ngFor="let i of items">

    <button type="button" [disabled]="'btn' + i.id" (click)="btn + i.id=true">TEST</button>

<div>


The [disabled]="'btn' + i.id" part seems to work, but i cant set the value of it to true using (click)="btn + i.id=true". How can I concatenate the btn and i.id and set the value of it to true?



Any help is appreciated!






angular button ngfor disable







share|improve this question



























    2














    I have a <button> in a ngFor loop and I want it to be disabled after the user clicks on the button. There is a button for each element of the loop so I have to differentiate them using a different boolean value for each of them.



    Here is a code snippet from the html:



    <div class="card" *ngFor="let i of items">
    
    <button type="button" [disabled]="'btn' + i.id" (click)="btn + i.id=true">TEST</button>
    
<div>


    The [disabled]="'btn' + i.id" part seems to work, but i cant set the value of it to true using (click)="btn + i.id=true". How can I concatenate the btn and i.id and set the value of it to true?



    Any help is appreciated!






    angular button ngfor disable







    share|improve this question

























      2












      2








      2







      I have a <button> in a ngFor loop and I want it to be disabled after the user clicks on the button. There is a button for each element of the loop so I have to differentiate them using a different boolean value for each of them.



      Here is a code snippet from the html:



      <div class="card" *ngFor="let i of items">
      
    <button type="button" [disabled]="'btn' + i.id" (click)="btn + i.id=true">TEST</button>
      
<div>


      The [disabled]="'btn' + i.id" part seems to work, but i cant set the value of it to true using (click)="btn + i.id=true". How can I concatenate the btn and i.id and set the value of it to true?



      Any help is appreciated!






      angular button ngfor disable







      share|improve this question













      I have a <button> in a ngFor loop and I want it to be disabled after the user clicks on the button. There is a button for each element of the loop so I have to differentiate them using a different boolean value for each of them.



      Here is a code snippet from the html:



      <div class="card" *ngFor="let i of items">
      
    <button type="button" [disabled]="'btn' + i.id" (click)="btn + i.id=true">TEST</button>
      
<div>


      The [disabled]="'btn' + i.id" part seems to work, but i cant set the value of it to true using (click)="btn + i.id=true". How can I concatenate the btn and i.id and set the value of it to true?



      Any help is appreciated!






      angular button ngfor disable




      angular button ngfor disable






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 13 '18 at 8:40









      tcodebtcodeb

      2017




      2017
























          2 Answers
          2






          active

          oldest

          votes


















          2














          Code from head (can have bugs):



          In your .ts component use array:



          buttons = Array(10).fill(false); // e.g. 10 = size of items


          In your template:



          <div class="card" *ngFor="let i of items; index as j">
          
    <button type="button" [disabled]="buttons[j]" (click)="buttons[j]=true">TEST</button>
          
<div>


          The index as j works on Angular 5/6, for lower version use let j=index



          Alternative solution



          Add to items field disabled and use that field directly: 



          <button type="button" [disabled]="item.disabled" (click)="item.disabled=true">TEST</button>





          share|improve this answer





















          • Τhanks! Works just like I wanted it to.
            – tcodeb
            Nov 13 '18 at 9:12



















          0















          Analyze below code




          <div class="card" *ngFor="let i of items">
          
  <button type="button" [disabled]="item.clicked" (click)="item.clicked=true">TEST</button>
          
<div>



          This is how it should be implemented in Angular.



          If you want to know which button gets clicked in your component. Then add 'clicked'
          property in items array and then use it in the component.







          share|improve this answer























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            2 Answers
            2






            active

            oldest

            votes








            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            2














            Code from head (can have bugs):



            In your .ts component use array:



            buttons = Array(10).fill(false); // e.g. 10 = size of items


            In your template:



            <div class="card" *ngFor="let i of items; index as j">
            
    <button type="button" [disabled]="buttons[j]" (click)="buttons[j]=true">TEST</button>
            
<div>


            The index as j works on Angular 5/6, for lower version use let j=index



            Alternative solution



            Add to items field disabled and use that field directly: 



            <button type="button" [disabled]="item.disabled" (click)="item.disabled=true">TEST</button>





            share|improve this answer





















            • Τhanks! Works just like I wanted it to.
              – tcodeb
              Nov 13 '18 at 9:12
















            2














            Code from head (can have bugs):



            In your .ts component use array:



            buttons = Array(10).fill(false); // e.g. 10 = size of items


            In your template:



            <div class="card" *ngFor="let i of items; index as j">
            
    <button type="button" [disabled]="buttons[j]" (click)="buttons[j]=true">TEST</button>
            
<div>


            The index as j works on Angular 5/6, for lower version use let j=index



            Alternative solution



            Add to items field disabled and use that field directly: 



            <button type="button" [disabled]="item.disabled" (click)="item.disabled=true">TEST</button>





            share|improve this answer





















            • Τhanks! Works just like I wanted it to.
              – tcodeb
              Nov 13 '18 at 9:12














            2












            2








            2






            Code from head (can have bugs):



            In your .ts component use array:



            buttons = Array(10).fill(false); // e.g. 10 = size of items


            In your template:



            <div class="card" *ngFor="let i of items; index as j">
            
    <button type="button" [disabled]="buttons[j]" (click)="buttons[j]=true">TEST</button>
            
<div>


            The index as j works on Angular 5/6, for lower version use let j=index



            Alternative solution



            Add to items field disabled and use that field directly: 



            <button type="button" [disabled]="item.disabled" (click)="item.disabled=true">TEST</button>





            share|improve this answer












            Code from head (can have bugs):



            In your .ts component use array:



            buttons = Array(10).fill(false); // e.g. 10 = size of items


            In your template:



            <div class="card" *ngFor="let i of items; index as j">
            
    <button type="button" [disabled]="buttons[j]" (click)="buttons[j]=true">TEST</button>
            
<div>


            The index as j works on Angular 5/6, for lower version use let j=index



            Alternative solution



            Add to items field disabled and use that field directly: 



            <button type="button" [disabled]="item.disabled" (click)="item.disabled=true">TEST</button>






            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Nov 13 '18 at 8:46









            Kamil KiełczewskiKamil Kiełczewski

            9,05685789




            9,05685789












            • Τhanks! Works just like I wanted it to.
              – tcodeb
              Nov 13 '18 at 9:12


















            • Τhanks! Works just like I wanted it to.
              – tcodeb
              Nov 13 '18 at 9:12
















            Τhanks! Works just like I wanted it to.
            – tcodeb
            Nov 13 '18 at 9:12




            Τhanks! Works just like I wanted it to.
            – tcodeb
            Nov 13 '18 at 9:12













            0















            Analyze below code




            <div class="card" *ngFor="let i of items">
            
  <button type="button" [disabled]="item.clicked" (click)="item.clicked=true">TEST</button>
            
<div>



            This is how it should be implemented in Angular.



            If you want to know which button gets clicked in your component. Then add 'clicked'
            property in items array and then use it in the component.







            share|improve this answer




























              0















              Analyze below code




              <div class="card" *ngFor="let i of items">
              
  <button type="button" [disabled]="item.clicked" (click)="item.clicked=true">TEST</button>
              
<div>



              This is how it should be implemented in Angular.



              If you want to know which button gets clicked in your component. Then add 'clicked'
              property in items array and then use it in the component.







              share|improve this answer


























                0












                0








                0







                Analyze below code




                <div class="card" *ngFor="let i of items">
                
  <button type="button" [disabled]="item.clicked" (click)="item.clicked=true">TEST</button>
                
<div>



                This is how it should be implemented in Angular.



                If you want to know which button gets clicked in your component. Then add 'clicked'
                property in items array and then use it in the component.







                share|improve this answer















                Analyze below code




                <div class="card" *ngFor="let i of items">
                
  <button type="button" [disabled]="item.clicked" (click)="item.clicked=true">TEST</button>
                
<div>



                This is how it should be implemented in Angular.



                If you want to know which button gets clicked in your component. Then add 'clicked'
                property in items array and then use it in the component.








                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Nov 13 '18 at 9:06

























                answered Nov 13 '18 at 8:59









                Abhishek SinghAbhishek Singh

                467419




                467419






























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