javascript - Unable to get property 'stringify' of undefined or null reference -
i getting error after ajax call fails , i'm trying log error object stringifying , saving sesssionstorage. site not in compatibility view or enterprise mode, ie11 , doctype <!doctype html>
, document mode edge , user agent string default. happening once in blue moon it's hard track down happening. haven't been able error being thrown yet, create own string catches details of error need , able move forward.
has else run situation json should available isn't? again, doctypes/compatibility settings fine , happens once in blue moon.
read stringify
here.
the cause of problem try call stringify
method of variable null
reference or undefined
. make sure not case, validate value valid json:
function isnullorundefined(param) { return (!param); }
then before call stringify foo:
if (!isnullorundefined(foo)) { //some code involving foo.stringify }
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