bash - Using a variable containing spaces as a single argument

Question

Think you have a variable that contains a string of text with spaces inbetween and you want to use that as input arguments for another script. How would you go about passing the variable content without worrying about the space chars?

The following doesn't work:

VAR1=hello world
#... do something else
./a_script.sh $VAR1

Answer 1

Use double quotes:

VAR1=hello world
#... do something else
./a_script.sh "$VAR1"