var arr = ['1', '2', '3'];
var r,oldPar = parseInt;
window.parseInt = function(...arg){
console.log(arg);
return oldPar(null,arguments);
}
r = arr.map(parseInt);
r = arr.map( (element) =>parseInt(element));解决，可以看看后面廖雪峰老师推荐的网站
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懒喵
var arr = ['1', '2', '3'];
var r,oldPar = parseInt;
window.parseInt = function(...arg){
console.log(arg);
return oldPar(null,arguments);
}
r = arr.map(parseInt);