JavaScript相当于Python的.format() [英] Javascript equivalent to python's .format()
问题描述
我想要一个模仿python .format()函数的javascript函数,就像
.format(* args ,** kwargs)
前面的问题给出了一个可能的(但不是完整的)'.format (* args)
JavaScript相当于printf / string.format
我希望能够做到
$ $ p $格式(you,bob
==>你好你和bob
hello {0格式(you,bob)
==> hello你和bob
hello {0}和{1}和{a} .format(you,bob,a =mary)
==>&hello you and bob and mary
hello {0} and {1} and格式(你,bob,jill,a =mary)
==>你好,bob和mary和jill
我意识到这是一个很高的顺序,但也许有一个地方是一个包含关键字参数的完整(或至少部分)解决方案。
哦,我听说AJAX和JQuery可能有这方面的方法,但我想能够做到这一点没有所有的开销。
特别是,我想能够使用它与谷歌文档的脚本。
谢谢 解析方案
更新:如果你使用的是ES6,模板字符串的工作方式非常类似到 String.format
: https://developers.google.com/web/updates/2015/01/ES6-Template-Strings
如果不是,那么下面的例子适用于上面的所有情况,与python的 String.format
方法非常相似。测试用例如下。
String.prototype.format = function(){var args =参数; this.unkeyed_index = 0;返回this.replace(/ \ {(\ w *)\} / g,function(match,key){if(key ===''){key = this.unkeyed_index; this.unkeyed_index ++} if key == + key){return args [key]!=='undefined'?args [key]:match;} else {for(var i = 0; i< args.length; i ++){if(typeof args [i] ==='object'&& typeof args [i] [key]!=='undefined'){return args [i] [key];}} return match;}} .bind(this) );}; //运行一些测试$('#tests').append(hello {} and {}< br />\".format(\"you,bob)).append(hello {0}和{1}< br />\".format(\"you,bob)).append(hello {0} and {1} and {a}< br /> format(you,bob,{a:mary})).append(hello {0} and {1} and {a} and {2}< br /你,bob,jill,{a:mary}));
< script src =https://ajax.googleapis.com/ajax/libs/jq uery / 2.1.1 / jquery.min.js>< / script>< div id =tests>< / div>
I would like a javascript function that mimics the python .format() function that works like
.format(*args, **kwargs)
A previous question gives a possible (but not complete) solution for '.format(*args)
JavaScript equivalent to printf/string.format
I would like to be able to do
"hello {} and {}".format("you", "bob"
==> hello you and bob
"hello {0} and {1}".format("you", "bob")
==> hello you and bob
"hello {0} and {1} and {a}".format("you", "bob",a="mary")
==> hello you and bob and mary
"hello {0} and {1} and {a} and {2}".format("you", "bob","jill",a="mary")
==> hello you and bob and mary and jill
I realize that's a tall order, but maybe somewhere out there is a complete (or at least partial) solution that includes keyword arguments as well.
Oh, and I hear AJAX and JQuery possibly have methods for this, but I would like to be able to do it without all that overhead.
In particular, I would like to be able to use it with a script for a google doc.
Thanks
UPDATE: If you're using ES6, template strings work very similarly to String.format
: https://developers.google.com/web/updates/2015/01/ES6-Template-Strings
If not, the below works for all the cases above, with a very similar syntax to python's String.format
method. Test cases below.
String.prototype.format = function() {
var args = arguments;
this.unkeyed_index = 0;
return this.replace(/\{(\w*)\}/g, function(match, key) {
if (key === '') {
key = this.unkeyed_index;
this.unkeyed_index++
}
if (key == +key) {
return args[key] !== 'undefined'
? args[key]
: match;
} else {
for (var i = 0; i < args.length; i++) {
if (typeof args[i] === 'object' && typeof args[i][key] !== 'undefined') {
return args[i][key];
}
}
return match;
}
}.bind(this));
};
// Run some tests
$('#tests')
.append(
"hello {} and {}<br />".format("you", "bob")
)
.append(
"hello {0} and {1}<br />".format("you", "bob")
)
.append(
"hello {0} and {1} and {a}<br />".format("you", "bob", {a:"mary"})
)
.append(
"hello {0} and {1} and {a} and {2}<br />".format("you", "bob", "jill", {a:"mary"})
);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="tests"></div>
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