Get only numbers, not wrapped specific characters like [[ ]]-CodePudding

I have a sting "123 [[value_666]]", "123-[[value_666]]", "123*[[value_666]]", "123/[[value_666]]" this my regex /[^0-9%^*/()\- .]/g it takes "123 666", "123-666" etc. the result should be "123 ", "123-" etc

CodePudding user response：

You can remove [[...]] pattern from string using string.replace:

const values = ["123 [[value_666]]", "123-[[value_666]]", "123*[[value_666]]", "123/[[value_666]]"]
const result = values.map(v => v.replace(/\[\[.*\]\]/, ''))
console.log(result)

Or you can match number at the start of the string one more symbol:

const values = ["123 [[value_666]]", "123-[[value_666]]", "123*[[value_666]]", "123/[[value_666]]"]
const result = values.map(v => v.match(/^(\d .)/)?.[1])
console.log(result)

You can also specify exact symbols to match after the number:

const values = ["123 [[value_666]]", "123-[[value_666]]", "123*[[value_666]]", "123/[[value_666]]"]
const result = values.map(v => v.match(/^(\d [ -/()*])/)?.[1])
console.log(result)

Or you can match everything except [ symbol:

const values = ["123 [[value_666]]", "123-[[value_666]]", "123*[[value_666]]", "123/[[value_666]]"]
const result = values.map(v => v.match(/^(\d [^\[])/)?.[1])
console.log(result)