更新：如果您使用的是ES6，模板字符串的工作方式与String.format以下内容非常相似：https : //developers.google.com/web/updates/2015/01/ES6-Template- Strings
如果没有，下面的代码适用于以上所有情况，语法与python的String.format方法非常相似。下面的测试用例。
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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