ALonG

# es5杂七杂八的题

# 面向对象

function Car(){}

function BMW(){}

BMW.call(Car)
BMW.prototype=Object.creat(Car)
BWM.prototype.constructor = BWM
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# 深考buffer

const allocUnsafe = Buffer?Buffer.allocUnsafe:undefined;//判断是否有buffer
function cloneBuffer(buffer,isDeep){
    if(!isDeep){
        return buffer.slice()
    }
    const length = buffer.length()
    const result = allocUnsafe?allocUnsafe(length):new buffer.constructor(length);
    buffer.copy(result)
    return result
}
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← oop →