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docs(arraybuffer): edit ab2str

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ruanyf 2017-10-15 09:37:12 +08:00
parent 4640bed36a
commit 24e9149543
1 changed files with 1 additions and 11 deletions
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docs/arraybuffer.md
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@ -452,17 +452,7 @@ Float64Array.BYTES_PER_ELEMENT // 8
```javascript ```javascript
// ArrayBuffer转为字符串，参数为ArrayBuffer对象 // ArrayBuffer转为字符串，参数为ArrayBuffer对象
function ab2str(buf) { function ab2str(buf) {
if (buf && buf.byteLength < 128000) { // limit max length avoid overhead return String.fromCharCode.apply(null, new Uint16Array(buf));
return String.fromCharCode.apply(null, new Uint16Array(buf));
}
const bufView = new Uint16Array(buf);
const len = bufView.length;
const bstr = new Array(len);
for (let i = 0; i < len; i++) {
bstr[i] = String.fromCharCode.call(null, bufView[i]);
}
return bstr.join('');
} }
// 字符串转为ArrayBuffer对象，参数为字符串 // 字符串转为ArrayBuffer对象，参数为字符串