js里的replaceall

let text = "apple banana apple orange apple";
let newText = text.replaceAll("apple", "pear");
console.log(newText); // 输出: "pear banana pear orange pear"

let text = "apple123 banana456 apple789";
let newText = text.replaceAll(/\d+/g, "");
console.log(newText); // 输出: "apple banana apple"

let text = "apple banana apple orange apple";
let newText = text.replace(/apple/g, "pear");
console.log(newText); // 输出: "pear banana pear orange pear"

if (!String.prototype.replaceAll) {
  String.prototype.replaceAll = function(search, replacement) {
    var target = this;
    return target.replace(new RegExp(search, 'g'), replacement);
  };
}

let text = "apple banana apple orange apple";
let newText = text.replaceAll("apple", "pear");
console.log(newText); // 输出: "pear banana pear orange pear"