jquery检查或等待变量有值，然后继续

Question

我可以等待或检查具有值的变量才能继续功能吗？

var someVar = false;

$('.someEl').animate({'marginLeft': 100}, 500, function () {
    // animating complete
    someVar = true;
});

function someFunction () {
    // watch someVar to be true and then run the code in this function
}

someFunction();

Answer 1

直接前进：

var someVar = false;

$('.someEl').animate({'marginLeft': 100}, 500, function () {
    // animating complete
    someVar = true;
    someFunction();
});

function someFunction () {
    // watch someVar to be true and then run the code in this function
}

有一种手表：

var someVar = false;

$('.someEl').animate({'marginLeft': 100}, 500, function () {
    // animating complete
    someVar = true;
});

function someFunction () {
    if (someVar) { do.. }
    else setTimeout(function() { someFunction(); }, 1);
}