javascript在数组中循环并分配toFixed（2）

Question

i have a javascript array named as array and when i console.log(array); i get

console

Array[6], Array[6], Array[6], Array[6]

and the each array has values

0: Array[6]
1: Array[6]
2: Array[6]
3: Array[6]

and each array has

    0: Array[6]
    0: "Jan"
    1: 5672.4000001
    2: "$5672.4000001"
    3: "<div class='tooltip'>↵ <p><b>Time Period:</b> Jan</p>↵ <p><b>Cost:</b> $5672.4000001</p>↵ <p><b>Data Used:</b> 277 GB</p>↵ </div>"
    4: "color: rgb(66, 133, 244)"
    5: 283626
1: Array[6]
0: "Feb"
1: 4673.62
2: "$4673.62"
3: "<div class='tooltip'>↵ <p><b>Time Period:</b> Feb</p>↵ <p><b>Cost:</b> $4673.62</p>↵ <p><b>Data Used:</b> 228 GB</p>↵ </div>"
4: "color: rgb(66, 133, 244)"
5: 233681

and further values are given

now what i want is to fetch the [2] index of each array in the first array it is "$5672.4000001" and convert it into the proper format like "$5672.40" upto two decimal places

i can loop through each index as

array.forEach(function(data) {

  });

but i dont know how to assign the rounding of to two decimal places for each array's data[2]

any help would be appreciated

Answer 1

You can use indexOf to find where the decimal is placed. Like this:

var str = array[2];
var theDot = str.indexOf(".");
var formatedPrice = str.substr(0, theDot+3);

formatedPrice will allways contain two decimals, like this "$5672.40"
(Unless you have more than one decimal, in that case you need to find the last dot).