Modern JavaScript Web Development Cookbook

上QQ阅读APP看书，第一时间看更新

Trimming strings

You may trim a string at both ends, or only at one, by using .trim(...), .trimStart(...), and .trimEnd(...):

"   Hello, there!  ".trim();      //    "Hello, there!"
"   Hello, there!  ".trimStart(); //    "Hello, there!  "
"   Hello, there!  ".trimEnd();   // "   Hello, there!"

Originally, .trimStart() was .trimLeft(), and .trimEnd() was .trimRight(), but the names were changed for the same reason as .padStart() and .padEnd() were.