code-boxx/0-JS-DISPLAY-ERROR.MD

## 0-JS-DISPLAY-ERROR.MD

      
    Raw
  

              0-JS-DISPLAY-ERROR.MD
            
          
    JAVASCRIPT DISPLAY ERROR MESSAGE

https://code-boxx.com/display-error-messages-javascript/
LICENSE

Copyright by Code Boxx
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

  
## 1-console.html
<!DOCTYPE html>
<html>
  <head>
    <title>JS Show Error Message</title>
    <script>
    function condemo () {
      // (A) CONSOLE LOG - OUTPUT TEXT OR VARIABLE IN CONSOLE
      var foo = "bar";
      console.log(foo);

      // (B) CONSOLE TABLE - OUTPUT ARRAY OR OBJECT IN TABLE FORM
      var colors = ["red", "green", "blue"];
      console.table(colors);

      // (C) CONSOLE ERROR - OUTPUT AN ERROR MESSAGE
      try {
        doesNotExist();
      } catch (err) {
        console.error(err);
      }
    }
    </script>
  </head>
  <body>
    <button onclick="condemo()">
      Open developer's console and click on this
    </button>
  </body>
</html>

## 2-popup.html
<!DOCTYPE html>
<html>
  <head>
    <title>JS Show Error Message</title>
    <script>
    function doalert () {
      try {
        doesNotExist();
      } catch (err) {
        alert(err);
      }
    }
    </script>
  </head>
  <body>
    <input type="button" value="Error Alert" onclick="doalert();">
  </body>
</html>

## 3-html.html
<!DOCTYPE html>
<html>
  <head>
    <title>JS Show Error Message</title>

    <!-- (A) THE CSS -->
    <style>
    #err {
      display: none;
      background: #f54242;
      border: 1px solid #bd1717;
      padding: 5px;
      margin: 5px;
      color: #fff;
      font-weight: bold;
    }
    </style>
  </head>
  <body>
    <!-- (B) THE HTML -->
    <div id="err"></div>
    <input type="button" value="Test Error" onclick="dohtml()">

    <!-- (C) JAVASCRIPT -->
    <script>
    function dohtml () {
      try {
        doesNotExist();
      } catch (err) {
        let notify = document.getElementById("err");
        notify.innerHTML = err;
        notify.style.display = "block";
      }
    }
    </script>
  </body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>JS Show Error Message</title>
	<script>
	function condemo () {
	// (A) CONSOLE LOG - OUTPUT TEXT OR VARIABLE IN CONSOLE
	var foo = "bar";
	console.log(foo);

	// (B) CONSOLE TABLE - OUTPUT ARRAY OR OBJECT IN TABLE FORM
	var colors = ["red", "green", "blue"];
	console.table(colors);

	// (C) CONSOLE ERROR - OUTPUT AN ERROR MESSAGE
	try {
	doesNotExist();
	} catch (err) {
	console.error(err);
	}
	}
	</script>
	</head>
	<body>
	<button onclick="condemo()">
	Open developer's console and click on this
	</button>
	</body>
	</html>