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data-bind-mapper

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<head> <script src="//cdn.jsdelivr.net/npm/data-bind-mapper"></script> <!-- <script src="../dist/data-bind-mapper.js"></script>--> </head> <body> <script> const myView = new Set(); const myDataMapper = new DataBindMapper(); myDataMapper .id('id') .onCreateObj(d => { console.log('createObj', d); const obj = {}; myView.add(obj); return obj; }) .onRemoveObj(obj => { myView.delete(obj); obj.double = 0; console.log('removeObj', obj); }) .onUpdateObj((obj, d) => { obj.double = d.val * 2; console.log('updateObj', obj, d); }); myDataMapper .digest([{ id: 0, val: 2 }, { id: 1, val: 4 }, { id: 2, val: 7 }]) .digest([{ id: 1, val: 4 }, { id: 2, val: 3 }, { id: 3, val: 9 }]); console.log('final data', [...myView]); </script> </body>