n1k0 · August 24, 2024 11:04 · Jul 9, 2018 · Jul 9, 2018
diff --git a/copy-to-clipboard.html b/copy-to-clipboard.html
@@ -28,7 +28,7 @@
               return res;
             });
         } catch (err) {
-          Promise.resolve(false);
+          return Promise.resolve(false);
         }
       }
     }

diff --git a/copy-to-clipboard.html b/copy-to-clipboard.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html lang="en" dir="ltr">
+  <head>
+    <meta charset="utf-8">
+    <title>copy to clipboard for chrome and firefox</title>
+  </head>
+  <body>
+    <button>copy</button>
+    <script>
+    function toClipoard(text) {
+      if ("clipboard" in navigator && typeof navigator.clipboard.writeText === "function") {
+        // Chrome
+        return navigator.clipboard.writeText(text)
+          .then(() => true)
+          .catch(() => false);
+      } else {
+        // Firefox
+        const input = document.createElement("input");
+        input.value = text;
+        input.style.position = "fixed";
+        input.style.top = "-2000px";
+        document.body.appendChild(input);
+        input.select();
+        try {
+          return Promise.resolve(document.execCommand("copy"))
+            .then(res => {
+              document.body.removeChild(input);
+              return res;
+            });
+        } catch (err) {
+          Promise.resolve(false);
+        }
+      }
+    }
+    document.querySelector("button").addEventListener("click", _ => {
+      toClipoard("this is a test")
+        .then(res => console.log("copied", res));
+    });
+    </script>
+  </body>
+</html>