Node.JS中的解构

节点v6及更高版本的更新 ：节点v6支持解构分配，而无需任何特殊的要求：

var [a, b] = [1, 2];

对于旧版本的node ：您可以通过键入以下命令来获取受支持的和声功能列表：

node --v8-options | grep harmony

节点5.x将为您提供：

--es_staging (enable all completed harmony features)--harmony (enable all completed harmony features)--harmony_shipping (enable all shipped harmony fetaures)--harmony_modules (enable "harmony modules" (in progress))--harmony_regexps (enable "harmony regular expression extensions" (in progress))--harmony_proxies (enable "harmony proxies" (in progress))--harmony_sloppy_function (enable "harmony sloppy function block scoping" (in progress))--harmony_sloppy_let (enable "harmony let in sloppy mode" (in progress))--harmony_unipre_regexps (enable "harmony unipre regexps" (in progress))--harmony_reflect (enable "harmony Reflect API" (in progress))--harmony_destructuring (enable "harmony destructuring" (in progress))--harmony_default_parameters (enable "harmony default parameters" (in progress))--harmony_sharedarraybuffer (enable "harmony sharedarraybuffer" (in progress))--harmony_atomics (enable "harmony atomics" (in progress))--harmony_simd (enable "harmony simd" (in progress))--harmony_array_includes (enable "harmony Array.prototype.includes")--harmony_tostring (enable "harmony toString")--harmony_concat_spreadable (enable "harmony isConcatSpreadable")--harmony_rest_parameters (enable "harmony rest parameters")--harmony_sloppy (enable "harmony features in sloppy mode")--harmony_arrow_functions (enable "harmony arrow functions")--harmony_new_target (enable "harmony new.target")--harmony_object_observe (enable "harmony Object.observe")--harmony_spreadcalls (enable "harmony spread-calls")--harmony_spread_arrays (enable "harmony spread in array literals")--harmony_object (enable "harmony Object methods")

--harmony_destructuring

--harmony_destructuring

$ node --harmony_destructuring> var {foo} = {foo: 'bar'};undefined> foo'bar'