javascript try catch
var someNumber = 1; try { someNumber.replace("-",""); //You can't replace a int } catch(err) { console.log(err); }
javascript try catch
var someNumber = 1; try { someNumber.replace("-",""); //You can't replace a int } catch(err) { console.log(err); }
js errors
JS Error Name Values: name Sets or returns the error name message Sets or returns an error message in string from EvalError An error has occurred in the eval() function RangeError A number is “out of range” ReferenceError An illegal reference has occurred SyntaxError A syntax error has occurred TypeError A type error has occurred URIError An encodeURI() error has occurred
js errors
JS Errors try Lets you define a block of code to test for errors catch Set up a block of code to execute in case of an error throw Create custom error messages instead of the standard JavaScript errors finally Lets you execute code, after try and catch, regardless of the result
JavaScript Errors
<p id="demo"></p> <script> try { adddlert("Welcome guest!"); } catch(err) { document.getElementById("demo").innerHTML = err.message; } </script>
javascript string error
Error.prototype.toString = function() { 'use strict'; var obj = Object(this); if (obj !== this) { throw new TypeError(); } var name = this.name; name = (name === undefined) ? 'Error' : String(name); var msg = this.message; msg = (msg === undefined) ? '' : String(msg); if (name === '') { return msg; } if (msg === '') { return name; } return name + ': ' + msg; };
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