我可以给你们举个例子:

函数fullName(first, last) { let fullName = first + " " + last; 返回fullName; } 函数fullNameStringInterpolation(first, last) { let fullName = ' ${first} ${last} '; 返回fullName; } console.log('Old School: ' + fullName('Carlos'， 'Gutierrez')); console.log('New School: ' + fullNameStringInterpolation('Carlos'， 'Gutierrez'));

你可以使用Prototype的模板系统，如果你真的想用大锤敲开一个坚果:

var template = new Template("I'm #{age} years old!");
alert(template.evaluate({age: 21}));

试试sprintf库(一个完整的开源JavaScript sprintf实现)。例如:

vsprintf('The first 4 letters of the english alphabet are: %s, %s, %s and %s', ['a', 'b', 'c', 'd']);

Vsprintf接受一个参数数组并返回一个格式化的字符串。

当我不知道如何正确地表达，只想快速地得到一个想法时，我就会在很多语言中使用这种模式:

// JavaScript
let stringValue = 'Hello, my name is {name}. You {action} my {relation}.'
    .replace(/{name}/g    ,'Inigo Montoya')
    .replace(/{action}/g  ,'killed')
    .replace(/{relation}/g,'father')
    ;

虽然不是特别高效，但我觉得它可读。它总是有效的，而且总是可用的:

' VBScript
dim template = "Hello, my name is {name}. You {action} my {relation}."
dim stringvalue = template
stringValue = replace(stringvalue, "{name}"    ,"Luke Skywalker")     
stringValue = replace(stringvalue, "{relation}","Father")     
stringValue = replace(stringvalue, "{action}"  ,"are")

总是

* COBOL
INSPECT stringvalue REPLACING FIRST '{name}'     BY 'Grendel Mother'
INSPECT stringvalue REPLACING FIRST '{relation}' BY 'Son shoulder'
INSPECT stringvalue REPLACING FIRST '{action}'   BY 'made a gaping mortal-making wound upon.'

替换更多的ES6版本的@Chris Nielsen的帖子。

String.prototype.supplant = function (o) {
  return this.replace(/\${([^\${}]*)}/g,
    (a, b) => {
      var r = o[b];
      return typeof r === 'string' || typeof r === 'number' ? r : a;
    }
  );
};

string = "How now ${color} cow? {${greeting}}, ${greeting}, moo says the ${color} cow.";

string.supplant({color: "brown", greeting: "moo"});
=> "How now brown cow? {moo}, moo, moo says the brown cow."

如果您想在console.log输出中插入，那么只需

console.log("Eruption 1: %s", eruption1);
                         ^^

这里，%s是所谓的“格式说明符”。log内置了这种插值支持。