Label Statement __javascript in JavaScript

In JavaScript, we may rarely use a label statement, but it is a good practice to apply a label statement, especially in a nested loop, where the continue and label can be accurately returned to the location of the program you want. Label statements, according to the book said the syntax is: label:statement: begin:for (var i = 0; i < i++) {A                    Lert (i); }
To give a more typical example, read the label after reading the application: (not added Label) var num = 0; for (var i = 0; i < i++) {for (var j = 0; J < + j) {if (i = 5 &&                   j = = 5) {break;              } num++; } alert (num); The loop jumps out of the J loop when I is 5,j 5, but continues the I loop, outputting 95
Compare the programs after using the label: (after adding the label)     var num = 0;     Outpoint:     for (var i = 0; i < i++) {         for (var j = 0 ; J < 10; J + +) {              if (i = = 5 && j = 5) {                    break outpoint;               {         num++;          }    }     alert (num); The loop jumps out of the double loop when I 5,j 5, returns to the Outpoint layer, continues, and outputs 55