复制代码 代码如下: /* * 从新浪微博上抄的 * */ var getLength = (function(){ var trim = function(h) { try { return h.replace(/^s+|s+$/g, "") } catch(j) { return h } } var byteLength = function(b) { if (typeof b == "undefined") { return 0 } var a = b.match(/[^x00-x80]/g); return (b.length + (!a ? 0 : a.length)) }; return function(q, g) { g = g || {}; g.max = g.max || 140; g.min = g.min || 41; g.surl = g.surl || 20; var p = trim(q).length; if (p > 0) { var j = g.min, s = g.max, b = g.surl, n = q; var r = q.match(/(http|https)://[a-zA-Z0-9]+(.[a-zA-Z0-9]+)+([-A-Z0-9a-z$.+!_*()/,:;@&=?~#%]*)*/gi) || []; var h = 0; for (var m = 0, p = r.length; m < p; m++) { var o = byteLength(r[m]); if (/^(http://t.cn)/.test(r[m])) { continue } else { if (/^(http://)+(weibo.com|weibo.cn)/.test(r[m])) { h += o <= j ? o: (o <= s ? b: (o - s + b)) } else { h += o <= s ? b: (o - s + b) } } n = n.replace(r[m], "") } return Math.ceil((h + byteLength(n)) / 2) } else { return 0 } } })();

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