The replace function replaces individual and global usage methods

//单个
var aa="1-2-3";
aa=aa.replace(',',".");
console.log(aa);

//Global replacement

var aa="1-2-3";
aa=aa.replace(/-/g,".");
console.log(aa);

##//Cut the content in the square bracket characters

var text ="hello [Word]";
var aaa=text.match(/([^\[\]]+)(?=\])/g)
console.log(aaa);

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