JavaScript 检查 string1 是否以 strings2 结尾

javascriptweb developmentobject oriented programming更新于 2025/10/25 0:44:17

我们需要编写一个 JavaScript 函数，该函数接受两个字符串，例如 string1 和 string2，并确定 string1 是否以 string2 结尾。

例如 −

"The game is on"
Here, "on" should return true

然而，

"the game is off"
Above, “of" should return false

让我们来编写该函数的代码 −

示例

const first = 'The game is on';
const second = ' on';
const endsWith = (first, second) => {
   const { length } = second;
   const { length: l } = first;
   const sub = first.substr(l - length, length);
   return sub === second;
};
console.log(endsWith(first, second));
console.log(endsWith(first, ' off'));