- js字符串去除html标签
str.replace(/<[^>]+>/g,"").trim()
- 字符串长度 汉字+2 字母+1
strlen(str){
let len = 0;
for (let i=0; i<str.length; i++) {
let c = str.charCodeAt(i);
//单字节加1
if ((c >= 0x0001 && c <= 0x007e) || (0xff60<=c && c<=0xff9f)) {
len++;
}
else {
len+=2;
}
}
return len;
} ,
