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Explain the Error Name Values in JavaScript with examples.
The error name value is used for setting or returning the error name. The error name can return the below values.
| Sl.No | Error Name & Description |
|---|---|
| 1 | EvalError It represents an error in the eval() function |
| 2 | RangeError It happens when a numeric value is out of its range |
| 3 | ReferenceError It happens when an illegal reference has occured |
| 4 | SyntaxError It represents a syntax error |
| 5 | TypeError It represents a type error |
| 6 | URIError It represents an error in the encodeURI(). |
Example
Following is the code for the error name values in JavaScript −
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.result {
font-size: 20px;
font-weight: 500;
}
</style>
</head>
<body>
<h1>Error name values in Javascript</h1>
<div style="color: green;" class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>
Click on the above button to call a variable before it is defined
</h3>
<script>
let resEle = document.querySelector(".result");
document.querySelector(".Btn").addEventListener("click", () => {
try {
resEle.innerHTML = a;
}
catch (err) {
resEle.innerHTML = "Error name = " + err.name;
}
let a = 44;
});
</script>
</body>
</html>Output
The above code will produce the following output −
On clicking the ‘CLICK HERE’ button −
Updated on: 15-Jul-2020
147 Views
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