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判断字符长度解决方法

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Release： 2016-06-13 13:14:58
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判断字符长度
function checkLength(str)
{
var i,sum;
sum=0;
for(i=0; i {
if ((str.charCodeAt(i)>=0) && (str.charCodeAt(i) sum = sum + 1;
else
sum = sum + 2;
}
return sum;
}

里面的(str.charCodeAt(i)>=0) && (str.charCodeAt(i)
------解决方案--------------------
(str.charCodeAt(i)>=0) && (str.charCodeAt(i)表示的是一个以Unicode 编码为基准的字符
大于255好像是表示一个字,占两位

Related labels：
amp str sum
source：php.cn
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