Javascript 循环通过某个东西，然后乘上所有东西

我真的很想得到一些帮助，通过下面的代码循环并将所有内容乘以我喜欢的因子。 提前谢谢你！ Ps：使用jquery也可以这样做

        <area shape="poly" coords=" 97,125,168,125,202,186,168,246, 97,246, 63,187"  onClick="Tile(0,0)"/>
        <area shape="poly" coords=" 97,246,168,246,202,307,168,368, 97,368, 63,306"  onClick="Tile(0,1)"/>
        <area shape="poly" coords=" 97,368,168,368,202,428,168,490, 97,489, 63,429"  onClick="Tile(0,2)"/>
        <area shape="poly" coords="201, 64,273, 64,307,125,273,187,202,186,168,125"  onClick="Tile(1,0)"/>
        <area shape="poly" coords="201,186,273,186,307,246,273,307,202,307,168,246"  onClick="Tile(1,1)"/>
        <area shape="poly" coords="201,307,273,307,307,368,273,428,202,428,168,368"  onClick="Tile(1,2)"/>
        <area shape="poly" coords="201,428,273,428,307,489,273,549,202,551,168,490"  onClick="Tile(1,3)"/>
        <area shape="poly" coords="306,125,378,125,411,186,378,246,306,246,273,186"  onClick="Tile(2,0)"/>
        <area shape="poly" coords="306,246,378,246,411,307,378,368,306,368,273,308"  onClick="Tile(2,1)"/>
        <area shape="poly" coords="306,368,378,368,411,429,378,489,306,489,273,428"  onClick="Tile(2,2)"/>
        <area shape="poly" coords="412, 64,482, 64,517,125,482,186,412,186,378,125"  onClick="Tile(3,0)"/>
        <area shape="poly" coords="412,186,482,186,517,247,482,308,412,307,378,247"  onClick="Tile(3,1)"/>
        <area shape="poly" coords="412,307,482,307,517,369,482,428,412,428,378,368"  onClick="Tile(3,2)"/>
        <area shape="poly" coords="412,428,482,428,517,489,482,550,412,550,378,490"  onClick="Tile(3,3)"/>
        <area shape="poly" coords="515,126,587,125,621,186,587,246,516,246,482,186"  onClick="Tile(4,0)"/>
        <area shape="poly" coords="515,246,587,246,621,307,587,368,516,368,482,308"  onClick="Tile(4,1)"/>
        <area shape="poly" coords="515,368,587,368,621,429,587,488,516,490,482,428"  onClick="Tile(4,2)"/> 

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尝试一下这个

虽然当前的答案确实解决了问题，但我有时发现，当您稍后回到代码时，一个更扩展、更分散的解决方案通常更容易遵循

$(function(){
    var fixedvar=5;
    $('area').each(function(){
        var arr=$(this).attr('coords').split(',');
        var sum=1;
        $.each(arr,function(index,value){
            sum+=fixedvar*value;
        });
        console.log(sum);
    });
});

这是我的建议

function multiplyByFactor(list, factor) {
    return list.map(function (itm) {
        return itm * factor;
    });
}

function stringArrayToNumArray(list) {
    return list.map(function (str) {
        return parseInt(str);
    });
}

function multiplyCoordinates(elements) {
    elements.each(function () {
        var el = $(this);
        //extract the current coordinates from the element
        var strCoords = el.attr("coords").split(",");
        //turn them into Numbers, to avoid any weird Javascript math
        var numCoords = stringArrayToNumArray(strCoords);
        //Multiply each by our factor
        var inflatedCoords = multiplyByFactor(numCoords, 5);
        //Set replace the attribute
        el.attr("coords", inflatedCoords.join(","));
    });
}

var areaElements = $("area");
multiplyCoordinates(areaElements);

---

这里有一把小提琴可以看到它在工作：

你能解释一下你到底需要什么吗？一个示例输出会很有帮助。因此我希望所有坐标都乘以相同的因子，但一个示例并没有真正的帮助，因为这些代码行本身并没有任何作用。因此，您希望将

coords

属性中的每个值乘以一个数字X？我很高兴：）。在你离开之前，你能再帮我一件事吗？如果是关于这场火灾的，如果是不同的问题，打开不同的帖子，在那里见你好吧，这有点，这就是我使用你的方法的原因。谢谢，这对理解非常有用，我喜欢在使用之前理解我的代码，这真的帮助了我，再次感谢！

function multiplyByFactor(list, factor) {
    return list.map(function (itm) {
        return itm * factor;
    });
}

function stringArrayToNumArray(list) {
    return list.map(function (str) {
        return parseInt(str);
    });
}

function multiplyCoordinates(elements) {
    elements.each(function () {
        var el = $(this);
        //extract the current coordinates from the element
        var strCoords = el.attr("coords").split(",");
        //turn them into Numbers, to avoid any weird Javascript math
        var numCoords = stringArrayToNumArray(strCoords);
        //Multiply each by our factor
        var inflatedCoords = multiplyByFactor(numCoords, 5);
        //Set replace the attribute
        el.attr("coords", inflatedCoords.join(","));
    });
}

var areaElements = $("area");
multiplyCoordinates(areaElements);