JS array specific position elements are empty, non-null and undefined, to achieve Echarts status chart effect; Google format compression JS code

First, want to achieve echarts line chart of the breakpoint effect,

This effect, when setting the data, should be this: data:[, 2, 3,, 5, 6, 7]; But there are two ways to add data dynamically

1, splicing string method: Var str= ' [, 2, 3,, 5, 6, 7] '; var arr=eval (str);

2. Change the array length method:

var arr=[];

for (Var i=1;i<8;i++) {

if (i==1| | i==4) {

arr.length=arr.length+1;

Continue

}
Arr.push (i);
}

Second, the format of Google debugging compression JS code

Zip code for Google Chrome

Click the {} symbol below to format the ZIP code.

JS array specific position elements are empty, non-null and undefined, to achieve Echarts status chart effect; Google format compression JS code