Check if text is in a string

Question

I want to check is some text is in a string for instance i have a string

str = \"car, bycicle, bus\"

and I have another string

Answer 1

If you just want to check substring in a string you can use indexOf but if you want to check if the word is in the string or not, the other answers might not work correctly for example:

str = "carpet, bycicle, bus"
str2 = "car"
What you want car word is found not car in carpet
if(str.indexOf(str2) >= 0) {
  // Still true here
}
// OR 
if(new RegExp(str2).test(str)) {
  // Still true here 
}

So you can improve the regex a bit to make it work

str = "carpet, bycicle, bus"
str1 = "car, bycicle, bus"
stringCheck = "car"
// This will false
if(new RegExp(`\b${stringCheck}\b`).test(str)) {
  
}
// This will true
if(new RegExp(`\b${stringCheck}\b`,"g").test(str1)) {
  
}