function isNativeFunc(fun){if(typeof fun !== 'function') throw new Error('isNativeFunc参数类型必须为function');return /{[nativepre]}$/.test(fun.toString().replace(/s/g,''))}
function isNativeFunc(fun){if(typeof fun !== 'function') throw new Error('isNativeFunc参数类型必须为function');return /{[nativepre]}$/.test(fun.toString().replace(/s/g,''))}