datatable column width

1$('#example').dataTable( {
2  "autoWidth": false, // might need this
3  "columns": [
4    { "width": "20%" },
5    null, // automatically calculates
6    null  // remaining width
7  ]
8} );

1columnDefs: [
2            { width: 200, targets: 0 }
3        ],

1table.display {
2  margin: 0 auto;
3  width: 100%;
4  clear: both;
5  border-collapse: collapse;
6  table-layout: fixed;         // add this 
7  word-wrap:break-word;        // add this 
8}
9

1$('#example').dataTable({
2  "columnDefs": [    
3    { "width": "20%", "targets": 0 }  
4  ]} 
5);

1$('#table_selector').dataTable( {
2  "autoWidth": false, //<-------- add this
3  //give custom width
4  "columns": [
5    { "width": "10%" },
6} );