mousedown不工作

Question

使用下面的代码，当我单击并按住bid-up按钮时，它只会遍历代码一次，并且我必须再次单击它才能工作。它应该做的是重复代码，直到鼠标向上或鼠标离开。我做错什么了？

$('.bid-up').live('mousedown',function() {

    var button = $(this);
    timeoutId = setTimeout(function(){

        var number = button.parent('div').siblings('#bid-child-container-2').find('#bid-price').val();
        var newnumber = number.split('.');
        var on = button.attr('data-on');

        button.siblings('#bid-down').attr('data-on','1');

        if(newnumber[1]<9) {
            var first = newnumber[0];
            var second = parseInt(newnumber[1])+1;
        }

        if(newnumber[1]==9) {
            var first = parseInt(newnumber[0])+1;
            var second = 0;
        }

        var finalnumber = first+'.'+second;
        button.parent('div').siblings('#bid-child-container-2').find('#bid-price').val(finalnumber);

    }, 20);

}).bind('mouseup mouseleave', function() {
    clearTimeout(timeoutId);
});

Answer 1

解决方案:使用setInterval和clearInterval而不是超时，因为setTimeout只执行闭包函数一次，或者在闭包函数中执行setTimeout。

在函数本身中使用setTimeout的示例：

$('.bid-up').live('mousedown',function() {

    var button = $(this);


    function asd(){

        var number = button.parent('div').siblings('#bid-child-container-2').find('#bid-price').val();
        var newnumber = number.split('.');
        var on = button.attr('data-on');

        button.siblings('#bid-down').attr('data-on','1');

        if(newnumber[1]<9) {
        var first = newnumber[0];
        var second = parseInt(newnumber[1])+1;
        }

        if(newnumber[1]==9) {
        var first = parseInt(newnumber[0])+1;
        var second = 0;
        }

        var finalnumber = first+'.'+second;
        button.parent('div').siblings('#bid-child-container-2').find('#bid-price').val(finalnumber);

        timeoutId = setTimeout(asd, 20);
    }

    timeoutId = setTimeout(asd, 20);

}).bind('mouseup mouseleave', function() {
    clearTimeout(timeoutId);
});

使用setInterval和data存储interval id的示例。

$('.bid-up').live('mousedown',function() {

    var button = $(this);

    button.data('interval', setInterval(function (){

        var number = button.parent('div').siblings('#bid-child-container-2').find('#bid-price').val();
        var newnumber = number.split('.');
        var on = button.attr('data-on');

        button.siblings('#bid-down').attr('data-on','1');

        if(newnumber[1]<9) {
        var first = newnumber[0];
        var second = parseInt(newnumber[1])+1;
        }

        if(newnumber[1]==9) {
        var first = parseInt(newnumber[0])+1;
        var second = 0;
        }

        var finalnumber = first+'.'+second;
        button.parent('div').siblings('#bid-child-container-2').find('#bid-price').val(finalnumber);
    }, 20));

}).bind('mouseup mouseleave', function() {
    clearInterval(button.data('interval'));
});

Answer 2

试试这个：http://jsfiddle.net/R85Xb/

var timeoutId;
function x()
{
        $("#bids").append("x");
        timeoutId = setTimeout(x, 200);
}

$('.bid-up').live('mousedown', function() {

    var button = $(this);
    timeoutId = setTimeout(x, 200);

}).bind('mouseup mouseleave', function() {
    //alert('clear');
    clearTimeout(timeoutId);
});​


<div class="bid-up">here</div>
<div id="bids"></div>​