How Can I Verify JSON String Validity Without Hitting Breakpoints?

Verifying JSON String Validity Without Triggering Breakpoints

Often, when debugging code, the "break on all errors" setting can disrupt the flow. This is especially problematic when dealing with invalid JSON strings. To avoid this, we can utilize an alternative approach.

Consider the following task: determining whether a given string is a valid JSON string. Traditionally, this may be done using try/catch blocks. However, with the breakpoint setting enabled, this strategy can lead to frequent interruptions.

Instead, we can employ the JSON.parse function. This function attempts to parse the input string as JSON. If successful, it returns the parsed object or value. If an error occurs during parsing, it throws an exception.

Leveraging this behavior, we can create a function, isJsonString, that takes a string as input and evaluates its validity. If the parsing is successful, the function returns true; otherwise, it returns false:

function isJsonString(str) {
    try {
        JSON.parse(str);
    } catch (e) {
        return false;
    }
    return true;
}

This method allows us to check JSON string validity without triggering any breakpoints, enabling smoother debugging.

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