从嵌套循环java脚本返回值(Return the value from nested loop java script)

从嵌套循环java脚本返回值(Return the value from nested loop java script)

我写了一个涉及多个循环的函数。

$scope.matchFunction = function() { angular.forEach(datas, function(data) { angular.forEach(data.innerdatas, function(nnerdata) { if (innerdata.id === 'ABCD') { console.log('matched'); //matched return true and break and stop executon return true; } }); }); return false; };

但我总是最终回归虚假。

我想我无法从嵌套循环返回。

任何帮助。

I have written a function which is involving multiple loops.

$scope.matchFunction = function() { angular.forEach(datas, function(data) { angular.forEach(data.innerdatas, function(nnerdata) { if (innerdata.id === 'ABCD') { console.log('matched'); //matched return true and break and stop executon return true; } }); }); return false; };

But I am always ending up in returning false.

I think I am not able to return from nested loops.

Any help.

最满意答案

您没有从main函数返回，只返回内部函数的值。

您可以使用变量来存储状态，然后可以返回它

$scope.matchFunction = function () { var valid = false; angular.forEach(datas, function (data) { angular.forEach(data.innerdatas, function (nnerdata) { if (innerdata.id === 'ABCD') { console.log('matched'); //matched return true and break and stop executon valid = true; } }); }); return valid; };

You are not returning from the main function, you are returning the value only from the inner function.

You can use a variable to store the state and then can return it like

$scope.matchFunction = function () { var valid = false; angular.forEach(datas, function (data) { angular.forEach(data.innerdatas, function (nnerdata) { if (innerdata.id === 'ABCD') { console.log('matched'); //matched return true and break and stop executon valid = true; } }); }); return valid; };