javascript check if variable exists
if (typeof myVar !== 'undefined') {
// myVar is defined
}
javascript check if variable exists
if (typeof myVar !== 'undefined') {
// myVar is defined
}
how to check if a variable exists in python
#if the variable is local:
if 'myVar' in locals():
# myVar exists
#if the variable is global:
if 'myVar' in globals():
# myVar exists.
check if isset variable js
var status = 'Variable exists'
try {
myVar
} catch (ReferenceError) {
status = 'Variable does not exist'
}
console.log(status)
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