regular expression add double quotes around values and keys in javascript

Question

i need a valid JSON format to request ES. i have a string like

{ 
time:  { 
          from:now-60d,
          mode:quick,
          to:now } 
}

Answer 1

Good day Idriss

if you wanted to place quotes around all the valid key names and values The maybe look at this expression. YCF_L's answer is prefect to what you wanted. But here it is none the less.

{(?=[a-z])|[a-z](?=:)|:(?=[a-z])|[a-z](?=,)|,(?=[a-z])|[a-z](?=})
str.replace(/{(?=[a-z])|[a-z](?=:)|:(?=[a-z])|[a-z](?=,)|,(?=[a-z])|[a-z](?
=})/igm, $&");