-----------------组件||插件------------------
export default {
install(Vue) { // 重点--->install
Vue.prototype.$formatMoney = function(s, n) {
n = n >= 0 && n <= 20 ? n : 2;
s = parseFloat((s + '').replace(/[^\d\.-]/g, '')).toFixed(n) + '';
var l = s.split('.')[0].split('').reverse(); var r = s.split('.')[1];
r = r == null ? '' : '.' + r;
var t = '';
// console.log(l)
if (l[l.length - 1] === '-') {
// 负数不需要分隔号,
for (var i = 0; i < l.length; i++) {
if (l[i] === '-') {
t += l[i] + ''
continue
}
// 不是数组的倒数第二个元素才加"," ["0", "4", "5", "-"]
t += l[i] + ((i + 1) % 3 == 0 && i + 1 != l.length - 1 ? ',' : '')
// i + 1 != l.length会变成-,540.00,因为在5时元素位置2+1为3非数组长度
// t += l[i] + ((i + 1) % 3 == 0 && i + 1 != l.length ? "," : "");
}
} else {
for (var i = 0; i < l.length; i++) {
t += l[i] + ((i + 1) % 3 == 0 && i + 1 != l.length ? ',' : '');
}
}
return (
t.split('').reverse().join('') + r
)
}
}
}
----------------------main.js||main.ts----------------------------
import formatMoney from './components/common/formatMoney'
Vue.use(formatMoney)
