js should i use try catch
One should avoid throw errors as the way to pass error conditions
around in applications.
The throw statement should only be used
"For this should never happen, crash and burn. Do not
recover elegantly in any way"
try catch however is used in situation where host objects
or ECMAScript may throw errors.
Example:
-------------------------------------
var json
try {
json = JSON.parse(input)
} catch (e) {
// invalid json input, set to null
json = null
}
-------------------------------------
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