how to set default selected in list

[jinggoing]

var data = [{value:1,label:'a'},{value:2,label:'b'}] var tableList = [ {value:1,title:'t1'},{value:2,title:'t2'} ]

tableList.map((item, index){ // how to set Multiselect default selected by item.value

})

[skratchdot]

You just need to set the selected property to true or false:

var data = [{value:1,label:'a'},{value:2,label:'b'}]
var selectedValue = 2;

// set "selected" properties
console.log('before map:', data);
data = data.map((d) => {
  d.selected = d.value === selectedValue;
  return d;
});
console.log('after map:', data);