去"-"你自己搞定,可以用replace或splitvar str[] = "7894561101".split("|");var sb = "";
for(var i=0;i<str.length;i++){
sb = sb + str[i] + "* 2"
if(i != str.length-1){
sb = sb + "+";
}
}
var result = eval(sb);
for(var i=0;i<str.length;i++){
sb = sb + str[i] + "* 2"
if(i != str.length-1){
sb = sb + "+";
}
}
var result = eval(sb);
var result = eval(str.split("|").join.("*2+"));