In this article we will show you the solution of try catch in angularjs, there is a need for proper exception-handling mechanisms in every application. AngularJS modules can handle exceptions using try, catch, and finally blocks in JavaScript.
An exception is logged to the browser console by default when the $exception Handler service is invoked. This service can be overridden according to your needs.
Try statements allow you to define blocks of code that are tested for errors while they are running.
When an error occurs in the try statement, the catch statement executes the defined block of code.
Step By Step Guide On Try Catch In AngularJS :-
Try/catch blocks prevent your code from totally bombing out when it encounters problems.
In case of an error when executing code within a try block, JavaScript will jump down and execute the catch section instead of stopping the script as a whole.
In the absence of errors, the entire try block will be executed, without executing any of the catch blocks.
<!DOCTYPE html>
<html>
<body><center>
<h1>JavaScript Statements</h1>
<h2>The throw Statement</h2>
<p>Please input a number between 5 and 10:</p>
<input id="demo" type="text">
<button type="button" onclick="myFunction()">Test Input</button>
<p id="message"></p>
<script>
function myFunction() {
const message = document.getElementById("message");
message.innerHTML = "";
let x = document.getElementById("demo").value;
try {
if(x == "") throw "is Empty";
if(isNaN(x)) throw "not a number";
if(x > 10) throw "too high";
if(x < 5) throw "too low";
}
catch(err) {
message.innerHTML = "Input " + err;
}
}
</script>
</center></body>
</html>
- In the first step, we write <HTML>, which tells the browser what HTML version we're using. HTML tags are used beginning of HTML documents.
- To define the body webpage's <body> tag is used. This is where we write all the content on our website.
- To align texts in the center, we used the center tag.
- <h1> is the heading tag used for heading text.
- A paragraph in a project is created with the p> tag.
- Text with value can be created using the text tag
- The button tag is used to create a button that can be clicked on a text with the click tag.
- AngularJs is a JavaScript framework. It can be added to an HTML page with a <script> tag. The script tag explains the source code we used for the angularjs google API run and the file we used for the code.
- Test statement allows you to check for errors in a block of code. Errors can be handled with this statement if they occur. Try/catch blocks can address problems inside your code and prevent your code from bombing. JavaScript will jump down to the catch portion of the script if it encounters an error when executing code in a try block.
- After that </body></html> and code should be executed after closed all tags.
Conclusion :-
$exception Handler is a service provided by AngularJS. The $log service, another AngularJS service that wraps console.log () to make it safe to use without the console object, handles errors by capturing them and logging them to the console.
As well, Angular attempts to provide some context to what went wrong by providing a cause along with the error.
I hope this article on try catch in angularjs helps you and the steps and method mentioned above are easy to follow and implement.
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