:: is used for one-time binding. The expression will stop recalculating once they are stable, i.e. after the first digest.
So any updates made to something will not be visible.
::用于一次性绑定。一旦表达稳定，即在第一次消化后，表达式将停止重新计算。 因此，对某些内容所做的任何更新都不可见。
:: is used for one-time binding. The expression will stop recalculating once they are stable, i.e. after the first digest.
So any updates made to something will not be visible.
::用于一次性绑定。一旦表达稳定，即在第一次消化后，表达式将停止重新计算。 因此，对某些内容所做的任何更新都不可见。