javascript - jQuery 延迟和对话框

Question

function ValidateField(){
var bAllow= true;

    //some checking here

if (bAllow == true && apl.val().trim() == "")
{ 
    showDialog(); 
    showDialog().done(function() {
        return true; // wanna return true, but not success
    }).fail(function() {
        return false; //wanna return false, but not success
    });
    return false; //stop it to execute to next line
}
return bAllow; //success return }

function showDialog(){
var def = $.Deferred();
var modPop = '<div id="diaCom" title="Information?"><p>something something</p></div>';
$("#diaCom").remove();
$(modPop).appendTo('body');
$("#diaCom").dialog({
    resizable: false,
    draggable: false,
    height:150,
    width:300,
    modal: true,
    buttons: {
        "Ok": function() {  
            def.resolve();
            $(this).dialog("close");

        },
        "Cancel": function() {
            def.reject();
            $(this).dialog("close");

        }
    }
});

return def.promise();
}
//on click
if (validateField() == true){
        //do something
 }else{
        //do something
  }

大家好，有机会返还值(value)吗？我希望通过 showDialog().done() 返回 true 和 false，并为 validatefield() 函数返回失败，但它没有按我想要的方式工作，我无法分配给 bAllow，因为我已经有一个 return false 来保持执行下一行的对话框，知道吗？或者这样做是正确的？

Answer 1

好吧，这可行。

你的对话框函数... showDialog()

function confirmation(question) {
    var defer = $.Deferred();
    $('<div></div>')
        .html(question)
        .dialog({
            autoOpen: true,
            modal: true,
            title: 'Confirmation',
            buttons: {
                "Yes": function () {
                    defer.resolve(true); //answer
                    $(this).dialog("close");
                },
                "No": function () {
                    defer.resolve(false); //answer
                    $(this).dialog("close");
                }
            },
            close: function () {
                $(this).remove(); //removes this dialog div from DOM
            }
        });
    return defer.promise();
}

然后是使用函数的代码...

function onclick(){
    var question = "Do you want to start a war?";
    confirmation(question).then(function (answer) {
        if (answer) {
            alert("this is obviously " + answer);//TRUE
        } else {
            alert("and then there is " + answer);//FALSE
        }
    });
}

这对大多数人来说似乎是错误的。但总有一些情况是您不能不从 JQuery 对话框返回。

这将基本上模仿 confirm() 函数。但是有丑陋的代码和漂亮的确认框外观:)

我希望这能帮助一些人。

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编辑:Bootstrap 3 解决方案

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我现在正在使用 [NakuPanda 的][1] Bootstrap 库，它工作得非常好。与 JQueryUI 基本相同，但在 Bootstrap UI 中。

function bsConfirm(question) {
    var defer = $.Deferred();
    BootstrapDialog.show({
        type: BootstrapDialog.TYPE_PRIMARY,
        title: 'Confirmation',
        message: question,
        closeByBackdrop: false,
        closeByKeyboard: false,
        draggable: true,
        buttons: [{
            label: 'Yes',
            action: function (dialog) {
                defer.resolve(true);
                dialog.close();
            }
        }, {
            label: 'No',
            action: function (dialog) {
                defer.resolve(false);
                dialog.close();
            }
        }],
        close: function (dialog) {
            dialog.remove();
        }
    });
    return defer.promise();
}
function bsAlert(error, message) {
    BootstrapDialog.show({
        type: error ? BootstrapDialog.TYPE_DANGER : BootstrapDialog.TYPE_SUCCESS,
        title: error ? "Error" : "Success",
        message: message,
        closeByBackdrop: false,
        closeByKeyboard: false,
        draggable: true,
        buttons: [{
            label: 'OK',
            action: function (d) {
                d.close();
            }
        }]
    });
}

和使用它(几乎相同的方式)

bsConfirm("Are you sure Bootstrap is what you wanted?").then(function (answer) {
    if (answer) {
        bsAlert("Well done! You have made the right choice");
    } else {
        bsAlert("I don't like you!");
    }
});