Question

我有一个显示多咖啡价值的js代码...... 如果我想显示一个单一的价值咖啡...它不会进入其他内部如果.. 我修改了现有的代码但得到了未定义的错误...... 你能告诉我如何解决它

var multCoffees = false;
var singleCoffee = false;
if (Coffees.length > 1) {
    multCoffees = true;
}
if (Coffees.length > 1) {
    singleCoffee = true;
}
if (apptTimeCell) {
    apptTimeHTML = MyDay.dish(allData, multCoffees, singleCoffee);
    apptTimeCell.innerHTML = apptTimeHTML;
} else {
    apptTimeCell = Util.cep("span", {
        className: "appt-time"
    });
    patientRowTD.insertBefore(apptTimeCell, patCell);
}
dish: function (allData, multCoffees, singleCoffee) {
    if (multCoffees) {
        var htmlArr = [];
        htmlArr.push(allData.APPT_TIME_DISPLAY, "<br/><span class='sub-detail'>", allData.MNEMONIC, "</span>");
        console.log("multiCoffee" + allData.PROVIDER_MNEMONIC);
        return htmlArr.join("");
    } else if (singleCoffee) {
        console.log("inside if" + allData.PROVIDER_MNEMONIC);
        var htmlArr = [];
        htmlArr.push(allData.APPT_TIME_DISPLAY, "<br/><span class='sub-detail'>", allData.PROVIDER_MNEMONIC, "</span>");
        console.log("singleCoffee" + allData.PROVIDER_MNEMONIC);
        return htmlArr.join("");
    } else {
        return allData.APPT_TIME_DISPLAY;
    }
},

工作代码

var multCoffees = false;
if (Coffees.length > 1) {
    multCoffees = true;
}
if (apptTimeCell) {
    apptTimeHTML = MyDay.dish(allData, multCoffees);
    apptTimeCell.innerHTML = apptTimeHTML;
} else {
    apptTimeCell = Util.cep("span", {
        className: "appt-time"
    });
    patientRowTD.insertBefore(apptTimeCell, patCell);
}
dish: function (allData, multCoffees) {
    if (multCoffees) {
        var htmlArr = [];
        htmlArr.push(allData.APPT_TIME_DISPLAY, "<br/><span class='sub-detail'>", allData.MNEMONIC, "</span>");
        console.log("multiCoffee" + allData.PROVIDER_MNEMONIC);
        return htmlArr.join("");
    } else {
        return allData.APPT_TIME_DISPLAY;
    }
},

Answer 1

假设Coffees.length为2.你这样做......

if (Coffees.length > 1) {
    multCoffees = true;
}

...和2＆gt; 1，所以现在multCoffees是真的，但是你这样做，它检查同样的事情......

if (Coffees.length > 1) {
    singleCoffee = true;
}

，并且，因为2＆gt; 1仍然，现在BOTH multCoffees和singleCoffee都是真的。所以当你尝试做

时

if (multCoffees) {
   ...
} else if (singleCoffee) {
   ...
}

第一个if分支是真的，所以它被执行，因此忽略了else分支（尽管也是如此）。您可能打算以

开头

if (Coffees.length == 1) {
    singleCoffee = true;
} else if (Coffees.length > 1) {
    multCoffees = true;
}

Answer 2

用这个块替换前两个ifs：

if (Coffees.length == 1) {
    singleCoffee = true; 
}
else if(Coffees.length > 1){
   multCoffees = true;
}

然后再试一次！

否则如果不打印我的控制台值

2 个答案: