javascript catch syntax error

I have been studying the DOM (Document Object Model) in Javascript recently. Of course, it cannot be said that it is a study. At most, it is just a study. It is not very difficult to understand the logic Syntax of Dom, it is only possible that some small errors will inevitably occur during encoding. Here, it is difficult to use the word "error. Two sections are

try{var date=new date ();Date.test ();//Call the undefined test method of date;Document.wrire ("Try Block execution end }catch (Error) {With (document) {Write ("Exception Write ("Exception type:" +error.name+ "Write ("Exception message:" +error.message);}}finally{document.write ("Exception handling completed! ");}throw new Error ("x must not being negative");Wind

Set the. js file to open by default in JSX syntaxIn the absence of settings, each time you open Webstorm, the. js file containing the JSX syntax will have the following prompt:Of course, we click on the conversion can be, but every time will prompt, so or a once and for all the way to remove it:Then Apply/ok can.Support for react-native syntax highlighting in. js File SettingsFirst, there are a number of wa

A JScript Run-time error is an error that occurs when a JScript script attempts to perform an action that the system cannot run. When you are running a script, evaluating a variable expression, or you are dynamically allocating memory, a JScript run-time error occurs. Error Number Description