s = 'hello %s, how are you doing' % (my_name)

在python中就是这么做的。如何在javascript/node.js中做到这一点?


当前回答

在Node.js v4中,你可以使用ES6的Template字符串

var my_name = 'John';
var s = `hello ${my_name}, how are you doing`;
console.log(s); // prints hello John, how are you doing

你需要在'(反撇号)而不是'(撇号)内换行字符串

其他回答

这样做:

s = 'hello ' + my_name + ', how are you doing'

更新

使用ES6,你也可以这样做:

s = `hello ${my_name}, how are you doing`

从node.js >4.0开始,它与ES6标准更加兼容,其中字符串操作得到了极大的改进。

原始问题的答案可以很简单:

var s = `hello ${my_name}, how are you doing`;
// note: tilt ` instead of single quote '

字符串可以展开多行,这使得模板或HTML/XML处理非常容易。关于它的更多细节和功能:模板字面量是在mozilla.org上的字符串字面量。

var user = "your name";
var s = 'hello ' + user + ', how are you doing';

下面是Node.js中的一个多行字符串文本示例。

> let name = 'Fred'
> tm = `Dear ${name},
... This is to inform you, ${name}, that you are
... IN VIOLATION of Penal Code 64.302-4.
... Surrender yourself IMMEDIATELY!
... THIS MEANS YOU, ${name}!!!
...
... `
'Dear Fred,\nThis is to inform you, Fred, that you are\nIN VIOLATION of Penal Code 64.302-4.\nSurrender yourself IMMEDIATELY!\nTHIS MEANS YOU, Fred!!!\n\n'
console.log(tm)
Dear Fred,
This is to inform you, Fred, that you are
IN VIOLATION of Penal Code 64.302-4.
Surrender yourself IMMEDIATELY!
THIS MEANS YOU, Fred!!!


undefined
>

如果你使用的是ES6,你应该使用模板文字。

//you can do this
let sentence = `My name is ${ user.name }. Nice to meet you.`

点击此处阅读更多信息: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals