Angular 4 prohibits certain special characters and the number zero

Currently, I am a beginner in Angular 4 and I am working on learning how to search for data from a text box.

However, whenever I input special characters like "%" in my code, it triggers an error leading to a crash in my application. Is there any effective solution to resolve this issue specifically in Angular 4?

Below is the snippet of my code:

<div class="btn-group" role="group" aria-label="...">
    <div class="input-group">
        <div class="input-group-addon"> <i class="fa fa-search"></i></div>
        <input class="form-control" [(ngModel)]="searchData" (keyup)="searchItemData(searchData)" type="text" placeholder="Search..."/>
    </div>
</div>
angulartypescript

Answer №1

Here is a simple solution to try out:

<input class="form-control" [(ngModel)]="searchData" (keyup)="searchItemData(searchData)" onkeypress='return (event.charCode > 96 && event.charCode < 123) || (event.charCode > 64 && event.charCode < 91) || (event.charCode >= 48 && event.charCode <= 57) || event.charCode <= 31' type="text" placeholder="Search..."/>
If you need further restrictions, simply add the corresponding ASCII values accordingly. Otherwise, do the opposite.

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