更改

fucntion foo(str) {

$(function (){

let s1 = /([0-9A-Za-z_])([\u4e00-\u9fa5])/g

str = document.getElementsByClassName('mw-parser-output')[0].outerText;

let s2 = /([\u4e00-\u9fa5])([0-9A-Za-z_])/g

let s1 = /([0-9A-Za-z_])([\u4e00-\u9fa5])/g;

temp = str.replace(s1, "$1 $2")

let s2 = /([\u4e00-\u9fa5])([0-9A-Za-z_])/g;

return temp.replace(s2, "$1 $2")

temp = str.replace(s1, "$1 $2");

}

return temp.replace(s2, "$1 $2");

});