如何逃避...每个循环和方法在同一时间？ [英] How to escape from for ... each loop and method at the same time?

问题描述

我正在使用下面的代码，迭代选择选项。我检查了是否已输入选项值。它从...中转义，但不会退出方法。

I am using the code below, that iterating over select options. I checked if options value has already entered. It escapes from for-each but it doesn't exit from method.

yeniIlacBagla_ilacBagla: function(){
    $("#bagliIlaclar > option").each(function(){
        if(this.value===$("#baglanacakIlacID").val()){
            alert($("#baglanacakIlacAdi").val()+'\n adlı ilaç zaten bağlıdır!'); 
            return;
        }else{
            $("#bagliIlaclar").append($('<option></option>').val($("#baglanacakIlacID").val()).html($("#baglanacakIlacAdi").val()));
        }
    });
}

推荐答案

根据 jquery的文档我发现以下

通过使
回调函数返回false ，我们可以在特定的迭代中打破$ .each（）循环。返回非false与for循环中的
continue语句相同;它将立即跳到下一个
迭代。

We can break the $.each() loop at a particular iteration by making the callback function return false. Returning non-false is the same as a continue statement in a for loop; it will skip immediately to the next iteration.

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