如何将变量放在javascript字符串中? [英] How do I put variables inside javascript strings?

问题描述

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

这就是您在python中执行此操作的方式.您如何在javascript/node.js中做到这一点?

That's how you do it in python. How can you do that in javascript/node.js?

推荐答案

请注意，从2015年开始，只需使用反引号进行模板制作

Note, from 2015 onwards, just use backticks for templating

https://stackoverflow.com/a/372​​45773/294884

let a = `hello ${name}`    // NOTE!!!!!!!! ` not ' or "

请注意，这是一个反引号，而不是引号.

Note that it is a backtick, not a quote.

如果您想要类似的东西，可以创建一个函数:

If you want to have something similar, you could create a function:

function parse(str) {
    var args = [].slice.call(arguments, 1),
        i = 0;

    return str.replace(/%s/g, () => args[i++]);
}

用法:

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

这只是一个简单的示例，并未考虑不同类型的数据类型(例如％i 等)或％s 的转义.但我希望它能给您一些想法.我很确定那里也有提供这种功能的库.

This is only a simple example and does not take into account different kinds of data types (like %i, etc) or escaping of %s. But I hope it gives you some idea. I'm pretty sure there are also libraries out there which provide a function like this.

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