复制代码 代码如下:
function strLength(str)
{
var realLength = 0, len = str.length, charCode = -1;
for (var i = 0; i < len; i++)
{
charCode = str.charCodeAt(i);
if (charCode >= 0 && charCode <= 128)
{
realLength += 1;
}
else
{
realLength += 2;
}
}
return realLength;
}
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