Detailed explanation of JS regular replacement method to remove spaces

This article mainly introduces the method of JSregular replacement to remove spaces. It compares and analyzes the deletion techniques for full-width and half-width spaces in the form of examples. It involves the use of replace regular replacement. Friends who need it can Refer to the following

The example of this article describes the method of JS regular replacement to remove spaces. I share it with you for your reference. The details are as follows:

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//去左空格;
function ltrim(s){
  return s.replace( /^/s*/, "");
}
//去右空格;
function rtrim(s){
  return s.replace( //s*$/, "");
}
//左右空格;
function trim(s){
  return rtrim(ltrim(s));
}

If you remove the half-width and full-width spaces and replace /s with [" "|"　"], it becomes

//去左空格;
function ltrim(s){
  return s.replace( /^[" "|"　"]*/, "");
}
//去右空格;
function rtrim(s){
  return s.replace( /[" "|"　"]*$/, "");
}
//左右空格;
function trim(s){
  return rtrim(ltrim(s));
}

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