javascript - Angular2 - *ngIf : How to show a specific element? -

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i willing show specific element using ngif; however, reason, not work.

the issue: when click show specific element, other elements shows up!

the code:

html (elements taken async request)

<ion-col *ngfor="#finalformat of elements"> <div *ngif="currentelement"> <div>show element</div> </div> <div (click)="showthis(finalformat.elementname)" *ngif="!currentelement">click show</div></ion-col>

js:

    showthis(element){     if(this.currentelement === element){       return;     }     this.currentelement = element;     }

i update test this:

<div *ngif="currentelement === finalformat.elementname">   (...) </div>

same "click show" block:

<div (click)="showthis(finalformat.elementname)"       *ngif="!currentelement !== finalformat.elementname">   click show </div>

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