String.prototype.format = function(args)
{
if (arguments.length > 0)
{
var result = this;
if (arguments.length == 1 && typeof (args) == "object")
{
for (var key in args)
{
var reg = new RegExp("({" + key + "})", "g");
result = result.replace(reg, args[key]);
}
}
else
{
for (var i = 0; i < arguments.length; i++)
{
if (arguments[i] == undefined)
{
return "";
}
else
{
var reg = new RegExp("({[" + i + "]})", "g");
result = result.replace(reg, arguments[i]);
}
}
}
return result;
}
else
{
return this;
}
}
String.prototype.format = function(args)
{
if(!String.prototype.format) {
String.prototype.format =
function
() {
var
str =
this
.toString();
if
(!arguments.length)
return
str;
var
args =
typeof
arguments[0],
args = ((
"string"
== args ||
"number"
== args) ? arguments : arguments[0]);
for
(arg
in
args)
str = str.replace(RegExp(
"\\{"
+ arg +
"\\}"
,
"gi"
), args[arg]);
return
str;
}
}
}
//兩種調用方式
var template1="我是{0}，今年{1}了";
var template2="我是{name}，今年{age}了";
var result1=template1.format("loogn",22);
var result2=template1.format({name:"loogn",age:22});
//兩個結果都是"我是loogn，今年22了"