typescript - Angular 5 - Copy to clipboard

Question

I am trying to implement an icon that when clicked will save a variable to the user's clipboard. I have currently tried several libraries and none of them have been able to do so.

How do I properly copy a variable to the user's clipboard in Angular 5?

Answer 1

Solution 1: Copy any text

HTML

<button (click)="copyMessage('This goes to Clipboard')" value="click to copy" >Copy this</button>

.ts file

copyMessage(val: string){
    const selBox = document.createElement('textarea');
    selBox.style.position = 'fixed';
    selBox.style.left = '0';
    selBox.style.top = '0';
    selBox.style.opacity = '0';
    selBox.value = val;
    document.body.appendChild(selBox);
    selBox.focus();
    selBox.select();
    document.execCommand('copy');
    document.body.removeChild(selBox);
  }

---

Solution 2: Copy from a TextBox

HTML

 <input type="text" value="User input Text to copy" #userinput>
      <button (click)="copyInputMessage(userinput)" value="click to copy" >Copy from Textbox</button>

.ts file

    /* To copy Text from Textbox */
  copyInputMessage(inputElement){
    inputElement.select();
    document.execCommand('copy');
    inputElement.setSelectionRange(0, 0);
  }

Demo Here

---

Solution 3: Import a 3rd party directive ngx-clipboard

<button class="btn btn-default" type="button" ngxClipboard [cbContent]="Text to be copied">copy</button>

---

Solution 4: Custom Directive

If you prefer using a custom directive, Check Dan Dohotaru's answer which is an elegant solution implemented using ClipboardEvent.

---

Solution 5: Angular Material

Angular material 9 + users can utilize the built-in clipboard feature to copy text. There are a few more customization available such as limiting the number of attempts to copy data.