<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,height=device-height">
<title>JS字符串使用占位符轻松实现拼接（来自react源码）</title>
<style>
</style>
</head>
<body>
<script>
let args = ['xu', '徐']
let s = '%s , %s'
let argIndex = 0
let newString = '%s , %s'.replace(/%s/g, () => args[argIndex++])
console.log(s) //%s , %s
console.log(newString) //xu , 徐
</script>
</body>
</html>