这代表什么意思?
function ab2hex(buffer) { let hexArr = Array.prototype.map.call( new Uint8Array(buffer), function(bit) { return (‘00’ + bit.toString(16)).slice(-2) } ) return hexArr.join(‘’);}
function ab2hex(buffer) { let hexArr = Array.prototype.map.call( new Uint8Array(buffer), function(bit) { return (‘00’ + bit.toString(16)).slice(-2) } ) return hexArr.join(‘’);}