Calculate Sina Weibo message length (you can also enter 119 characters)_javascript skills

This article is a method for calculating the message length of Sina Weibo. That is (please abide by the community convention when speaking, and you can enter 119 characters).

Copy code The code is as follows:

var getMessageLength = (function() {
var byteLength = function(b) {
if(typeof b == "undefined") {
return 0;
}
var a = b.match(/[^x00-x80]/g);
return(b.length (!a ? 0 : a.length));
};
return function(message) {
message = message || '';
message = message.replace(/rn/g, "n");
var c = 41 ,
d = 140,
e = 20,
f = message,
g = message.match(/http://[a-zA-Z0-9] (.[a- zA-Z0-9] ) ([-A-Z0-9a-z_$. !*()/,:;@&=?~#%]*)*/gi) || [],
h = 0;

for(var i = 0, j = g.length; i < j; i ) {
var k = byteLength(g[i]);
if(/ ^(http://t.cn)/.test(g[i])) {
continue;
}
/^(http://) (t.sina.com.cn| t.sina.cn)/.test(g[i]) || /^(http://) (weibo.com|weibo.cn)/.test(g[i]) ? h = k <= c ? k : k <= d ? e : k - d e : h = k <= d ? e : k - d e;
f = f.replace(g[i], "");
}
var l = Math.ceil((h byteLength(f)) / 2);
return l;
};
})();

getMessageLength('The hard drive of my computer broke yesterday. I sent an email to the National Security Agency, but they refused to send me the backup content! '); //39