var print = console.log;

function dformat(str, ...arr) {
  return str.replace(/%(\d+)/g, function(_,i) {
    return arr[--i];
  });
}

function wformat(str, dict) {
  return str.replace(/%(\w+)/g, function(_,k) {
    return dict[k];
  });
}

function sformat(str, dict) {
  return str.replace(/\$(\w+)/g, function(_,m) {
    return dict[m];
  });
}

function tformat(str, dict) {
  return str.replace(/\${(\w+)}/g, function(_,m) {
    return dict[m];
  });
}

print(1, dformat("uid:%1, name:%2", 120, "someone") )
print(2, wformat("color: %name", {name: "green"})   )
print(3, sformat("img: $url", {url: "#"})   )
print(4, tformat("${left} ${right}", {right:"1000", left: "7fff"}) )

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。

试试JS中的sprintf 或者你可以用这个要点

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
>

如果使用node.js, console.log()将format string作为第一个参数:

 console.log('count: %d', count);

跑龙套。格式可以做到这一点。

它将是v0.5.3的一部分，可以像这样使用:

var uri = util.format('http%s://%s%s', 
      (useSSL?'s':''), apiBase, path||'/');