function tipCalc(bill) {
var tipPercent;
if (bill < 50 ) {
tipPercent = .20;
} else if (bill >= 50 && bill < 200){
tipPercent = .15;
} else {
tipPercent = .10;
}
return tipPercent * bill;
}
var bills = [124, 48, 268];
var tips = [tipCalc(bills[0]),
tipCalc(bills[1]),
tipCalc(bills[2])];
var finalValues =[bills[0] + tips[0],
bills[1] + tips[1],
bills[2] + tips[2]];
console.log(tips, finalValues);
我希望18.59999999999998显示为$ 18.6(在Console.log中)。我尝试使用.tofixed(2),但没有成功。
toFixed()
返回 string
您需要使用Number()
转换回号码
function tipCalc(bill) {
var tipPercent;
if (bill < 50 ) {
tipPercent = .20;
} else if (bill >= 50 && bill < 200){
tipPercent = .15;
} else {
tipPercent = .10;
}
return Number((tipPercent * bill).toFixed(1));
}
var bills = [124, 48, 268];
var tips = [tipCalc(bills[0]),
tipCalc(bills[1]),
tipCalc(bills[2])];
var finalValues =[bills[0] + tips[0],
bills[1] + tips[1],
bills[2] + tips[2]];
console.log(tips, finalValues);
.toFixed()
仅适用于数字值,首先将finalValues
转换为数字,然后尝试
console.log('$' number(finalValues).tofixed(2));
希望它会有所帮助。
使用 .toFixed(1)
对圆形值。TOFIXED用于格式化小数右侧具有特定数字数字的数字。您可能会使用tofixed()直接返回该值。首先将.tofixed()值保存在变量中,然后返回该变量。
function tipCalc(bill) {
var tipPercent;
if (bill < 50 ) {
tipPercent = .20;
} else if (bill >= 50 && bill < 200){
tipPercent = .15;
} else {
tipPercent = .10;
}
var val=(tipPercent * bill).toFixed(1);
return parseFloat(val);
}
var bills = [124, 48, 268];
var tips = ["$"+tipCalc(bills[0]),
"$"+tipCalc(bills[1]),
"$"+tipCalc(bills[2])];
var finalValues =["$"+ bills[0] + tips[0],
"$"+bills[1] + tips[1],
"$"+bills[2] + tips[2]];
console.log(tips, finalValues);