Try this: if(response) { try { a = JSON.parse(response); } catch(e) { alert(e); // error in the above string (in this case, yes)! } } ... If the try block ... ... <看更多>

2015年11月26日 — I believe it's correct as per the spec for fetch to throw an error if you try to get json output from a non json response… ? ... <看更多>

What is try and catch blocks in javascript 3. What is JSON. stringify method in javascript objects. 4.. Why JSON. parse will not work for if ... ... <看更多>

If the input string is not valid JSON, the JSON.parse() throws an exception. If no exception occurs, the function returns true in the try block. Otherwise, it ... ... <看更多>

Circe includes a parsing module, which on the JVM is a wrapper around the Jawn JSON parser ... Let's see what happens when you try to parse invalid JSON:. ... <看更多>