<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>自定义错误throw</title> <!-- throw a; Interpretation: After throwing error, and custom error messages a, a is the error message prompts Use catch (b) to capture error messages b, b is the custom error name, also known accommodate the wrong target Remember: When an error is generated, JavaScript can actually create an Error object with two properties: name and message. -> </ head > < body > < Script > var A = . 1 ; the try { the throw " I error " ; // custom Massage error } the catch (B) { // the catch () capturing error name = b the console.log (B); // B receiving the throw Massage defined error } </ Script > </ body > </ HTML >
Custom Error throw
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Origin www.cnblogs.com/vinson-blog/p/12040320.html
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