具有延迟的多个复选框选择以检查其他复选框更改

Multiple Checkbox Selection with Delay to Check for Other Checkbox Change

本文关键字：复选框 检查 其他 选择 延迟      更新时间：2023-11-10

我被迫使用jQuery Mobile，尽管它是一个构建良好的系统，但我还是有些犹豫。因此，我有一个表单，当任何复选框发生更改时都可以提交。客户端希望这样，当他们点击一个页面时，页面会等待提交一段时间，这样，如果选择了另一个，则不会触发上一个请求，而会触发新的请求。它本质上是为了减少即时性，并允许更高效的过滤/请求。我的代码是这样的：

$( function() {
    var sForm = "form[name='Waves']",
        sCboxes = "input[type='checkbox']",
        sWaves = "";
    var $Cboxes = $(sForm + " " + sCboxes),
        sChecked = sCboxes + ":checked";
    $Cboxes.change( function(event) {
        var $this = $(this);
        if ( $this.attr("id") != "ClearAll" ) {
            console.debug($(this));
            console.debug('Changing page.');
            sWaves = "";
            // Form the string for the selected waves with standard check-if-it's-the-last
            // element logic for comma generation.
            $.each( $(sChecked) , function(i, v) {
                var $this = $(this);
                var iIndex = v.value;
                sWaves += iIndex + ( ( i == $(sChecked).length - 1 ) ? "" : "," );
            } );
            console.debug("Waves to select: " + sWaves);
            $.mobile.changePage("default.asp", {
                data: { Wave: sWaves },     // Submit the previously formed string
                type: "post"
            } );
            //$(sForm).submit();
        } else {
            $(sChecked).add( $(this) ).attr("checked", false).checkboxradio("refresh");
            $.mobile.changePage("default.asp", {
                data: { Wave: "" },
                type: "post"
            } );
        }
    } );
    $("#ClearAll").click( function(event) {
        event.preventDefault();
    } );
    $(".slideout").click( function(){
        $(this).parents(".ui-collapsible").find(".ui-icon-minus").click();
    } );
} );

表单的HTML：

<form ACTION="<%=ASP_SELF()%>" ID="Waves" METHOD="post" NAME="Waves">
<% ' Put the scripts we need here so that it loads with the page. %>
<script SRC="/base/scripts/scripts.js"></script>
<fieldset DATA-ROLE="controlgroup" DATA-TYPE="horizontal" STYLE="margin-left:5px; margin-bottom:0px; ">
       <input TYPE="checkbox" NAME="#" ID="#" VALUE="Select Waves" CLASS="custom"   />
       <label CLASS="no-hover" FOR="#">&nbsp;Waves:&nbsp;</label>
       <input TYPE="checkbox" NAME="Wave1" ID="Wave1" VALUE="1" CLASS="custom" STYLE="width:70px !important; " <% If Instr(request("Wave"),"1") OR WaveOne = "YES" Then response.write " checked=""checked""" End If %> />
       <label FOR="Wave1">&nbsp;1&nbsp;</label>
       <input TYPE="checkbox" NAME="Wave2" ID="Wave2" VALUE="2" CLASS="custom" STYLE="width:70px !important; " <% If Instr(request("Wave"),"2") OR WaveTwo = "YES" Then response.write " checked=""checked""" End If %> />
       <label FOR="Wave2">&nbsp;2&nbsp;</label>
       <input TYPE="checkbox" NAME="Wave3" ID="Wave3" VALUE="3" CLASS="custom" STYLE="width:70px !important; "<% If Instr(request("Wave"),"3") OR WaveThree = "YES" Then response.write " checked=""checked""" End If %> />
       <label FOR="Wave3">&nbsp;3&nbsp;</label>
       <input TYPE="checkbox" NAME="Wave4" ID="Wave4" VALUE="4" CLASS="custom" STYLE="width:70px !important; "<% If Instr(request("Wave"),"4") OR WaveFour = "YES" Then response.write " checked=""checked""" End If %> />
       <label FOR="Wave4">&nbsp;4&nbsp;</label>
       <input TYPE="checkbox" NAME="ClearAll" ID="ClearAll" VALUE="Clear" CLASS="custom" $('input[data-type="search"]').TRIGGER("CHANGE").VAL(""); />
       <label FOR="ClearAll">&nbsp;Clear&nbsp;&nbsp;</label>
</fieldset>
    </form>

我需要将$.mobile.changePage调用延迟足够长的时间，以允许其他相关的复选框（在同一字段集中）也被切换。我感谢您的意见！这是一件非常重要的事情。

var timer;
var waitTime = 2000;
$Cboxes.change( function(event) {
 if(timer)clearTimeout(timer);
 timer = setTimeout(function(){
  //your logic
  },waitTime);
 });

当改变事件被触发时，要执行的动作被安排在2000ms之后，如果用户之前改变主意，只需清除间隔并创建一个新的

延迟很容易实现。

$(function() {
    var $form = $("form[name='Waves']"),
        $Cboxes = $("input[type='checkbox']", $form),
        timer = null
        delay = 1000;
    $cboxes.not("#ClearAll").change(function() {
        // reset the current timer
        window.clearTimeout(timer);
        // create a new timer to delay form submission
        timer = window.setTimeout(function() {
            // get all the selected checkboxes as an array
            // and create a comma separated string
            var sWaves = $cboxes.is(":checked").map(function(item){
                return item.value;
            }).join(",");
            $.mobile.changePage("default.asp", {
                // Submit the previously formed string
                data: { Wave: sWaves },
                type: "post"
            });
        }, delay);
    });

    $("#ClearAll").change(function() {
        $cboxes.attr("checked", false).checkboxradio("refresh");
        $.mobile.changePage("default.asp", {
            data: { Wave: "" },
            type: "post"
        } );
    })
});

我还冒昧地简化了你的一些逻辑。尤其是在Array.join()面前，字符串的创建显得过于复杂。

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