snippets

code

写了个格式化银行卡的方法
function formatBankcard(str){
return str.split('').reduce((prev, next, index)=> {
return prev + ((index % 4) ? next : (' ' + next ));
});
}

let str = '6214143523234154320';
formatBankcard(str)； //6214 1435 2323 4154 320
格式化货币的正则(借鉴来的)
var test1 = '1234567890'
var format = test1.replace(/\B(?=(\d{3})+(?!\d))/g, ',')
console.log(format) // 1,234,567,890

//或者

(23333333).toLocaleString('en-US') // 23,333,333
nginx跨域配置文件中的片段，重点在于Access-Control-Allow-Headers 很难搜...已经解决
//允许自定义的header中带有下划线，我曾经被坑惨了..
underscores_in_headers on;
//server中的代码段：
location / {
//设置了还跨域失败多数是Header引起的，此处的值由需要填写，HEAD_INFO是自定义的东西
add_header 'Access-Control-Allow-Headers' 'HEAD_INFO,Content-Type';
add_header 'Access-Control-Allow-Origin' '';
add_header 'Access-Control-Allow-Credentials' 'true';
add_header 'Access-Control-Allow-Methods' 'GET,POST';
//保留参数(前提/apis)
#rewrite ^.+apis/?(.*)$/$1 break;
include uwsgi_params;
//代理地址
proxy_pass http://[your link];
}
节流函数
function throttle(fn, context) {
clearTimeout(fn.timeoutId);
fn.timeoutId = setTimeout(fn.bind(context), 500);
}
input中文键盘处理
input.addEventListener('compositionstart', fn);
input.addEventListener('compositionend', fn);
列表触底
const body = document.body;
const html = document.documentElement;
body.onscroll = () => {
throttle(fnCheckListStop);
if (html.scrollHeight - html.clientHeight > 0) {
((html.scrollHeight - html.clientHeight) <= (html.scrollTop || body.scrollTop)) && fnCheckListTouchBottom;
}
}