For example, there is a string:

var dataStr="1,2,3,4,5";

Now we need to split it into int type Array:

var dataIntArr=;

How to do it? There are many methods, here are two interesting ones:

var dataStr="1,2,3,4,5";//original string

var dataStrArr=dataStr. split(",");//Split into a string array

var dataIntArr=[];//Save the converted integer string

//Method 1

dataStrArr.forEach(function(data,index,arr){

dataIntArr.push(+data);

});

console.log(dataIntArr);

//Method 2

dataIntArr=dataStrArr.map(function(data){

return +data;

});

console.log(dataIntArr);

To understand these two methods, you must understand the usage of map and forEach.