Why is $watch used?

Why is $watch used?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: easy

标签: interviewbit, angularjs, topic-specific, javascript, frontend

参考答案摘要

$watch is used for keeping track of the old and new values of the expression or the model variable that is being watched. One such usage is as shown below: $scope.$watch("trackedVariable", function (n...

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