SOURCE

var s = "dxc:point-info-operation:2006";
console.log(); 
let arr = []
if(s.indexOf("point-info-operation:") > 0){
    let a =  s.lastIndexOf(':')
    console.log(a)
    let b = s.substring(a+1)
    console.log(b)
    arr.push(b)
}else{
    console.log("没有权限改哦")
}
console.log(arr)