JS API 笔记

stringify(value: any, replacer?: (this: any, key: string, value: any) => any, space?: string | number): string;

stringify(value: any, replacer?: (number | string)[] | null, space?: string | number): string;

const person = {
    name: "Xiaomi",
    age: 10,
    wife: {
        gender: 'female'
    }
}
console.log(JSON.stringify(person, ["name", "wife", "gender"]))

const person = {
    name: "Xiaomi",
    age: 18
}
console.log(
    JSON.stringify(person, (k, v) => {
        if (k == 'name') {
            return 'no name'
        }
        return v
    })
)

const person = {
    name: "Xiaomi",
    wife: {
        name: "Xiaoli"
    }
}
console.log(JSON.stringify(person, null, 4))

const person = {
    name: "Xiaomi",
    // add this
    toJSON(){
        return "warning"
    }
}
console.log(JSON.stringify(person))

replace(searchValue: { [Symbol.replace](string: string, replaceValue: string): string; }, replaceValue: string): string;

replace(searchValue: { [Symbol.replace](string: string, replacer: (substring: string, ...args: any[]) => string): string; }, replacer: (substring: string, ...args: any[]) => string): string;

const str = "liming.mingli";
console.log(str.replace(/li/g, ""))

const str = "1234-6789"
console.log(str.replace(/-/, "$`$&$'"))

const str = "[desc](link)"
console.log(str.replace(/\[(.+?)\]\((.+?)\)/, "[$2]($1)"))

const str = `This method does not mutate the string value it's called on`
console.log(
    str.replace(/\b(\w+)\b/g, (match, p1) => {
        return p1[0].toUpperCase() + p1.substring(1)
    })
)

const str = `poetry is the other way of using language. perhaps in some hypothetical beginning of things it was the only way of using language or simply was language tout court, prose being the derivative and younger rival. `
console.log(
    str.replace(/(?:^|(?:[.!?]\s))(\w+)/g, (match, p1) => {
        return match.replace(p1, p1[0].toUpperCase() + p1.substring(1))
    })
)