web前端|js教程
javascript,格式化
web前端-js教程
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var format = function (number, form) {
var forms = form.split(.), number = \ + number, numbers = number.split(.)
, leftnumber = numbers[0].split(\)
, exec = function (lastMatch) {
if (lastMatch == || lastMatch == #) {
if (leftnumber.length) {
return leftnumber.pop();
} else if (lastMatch == ) {
return lastMatch;
} else {
return \;
}
} else {
return lastMatch;
}
}, string
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string = forms[0].split(\).reverse().join(\).replace(/./g, exec).split(\).reverse().join(\);
string = leftnumber.join(\) + string;
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if (forms[1] && forms[1].length) {
leftnumber = (numbers[1] && numbers[1].length) ? numbers[1].split(\).reverse() : [];
string += . + forms[1].replace(/./g, exec);
}
return string.replace(//.$/, \);
};
alert(format(123, #.00)) //输出 123.00
alert(format(123, .##)) //输出 123
alert(format(123, 000.00 ))//输出 0123.00
alert(format(123456, ###,###.00))//输出 123,456.00
