We can find many discussions and solutions about this issue.
In my case the one that worked is this code.
Below you’ll find a compressed version of the extend() function (with a fix):
1 | function extend(){var r,t,n,o,e=arguments[0]||{},f=1,i=arguments.length,u=!1,y=function(r){if(null===r||"object"!=typeof r||r.nodeType||null!==r&&r===r.window)return!1;try{if(r.constructor&&!this.hasOwnProperty.call(r.constructor.prototype,"isPrototypeOf"))return!1}catch(t){return!1}return!0};for("boolean"==typeof e&&(u=e,e=arguments[f]||{},f++),"object"!=typeof e&&"function"!=typeof e&&(e={}),!1;i>f;f+=1)if(null!==(r=arguments[f]))for(t in r)e!==r[t]&&"undefined"==typeof e[t]&&(u&&r[t]&&(y(r[t])||(n=Array.isArray(r[t])))?(n?(n=!1,o=e[t]&&Array.isArray(e[t])?e[t]:[]):o=e[t]&&y(e[t])?e[t]:{},e[t]=extend(u,o,r[t])):void 0!==r[t]&&(e[t]=r[t]));return e} |
And here an example:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | var object_a = { value_1: 'a', value_2: true, value_3: 354, value_4: [ 'x', 'y', 'z' ], value_5: { I: 'I', II: 'II', III: 'III', IV: { a: 'A', b: 'B' }, V: [ 'elm', { 5: 'five' }, ['my_array'] ] }, value_6: function() { return "pouet" }, value_7: new Date(2017, 0, 1) };var object_b = {};// clone object_a into object_bextend(true, object_b, object_a);object_a.value_2 = false;object_a.value_1 = "b";console.log("A => ", object_a);console.log("B => ", object_b); |