JS execution efficiency and performance improvement Program

If you are appending strings, it is best to use the S+=ANOTHERSTR operation instead of using S=S+ANOTHERSTR. If you want to connect more than one string, you should use less than + =, such as s+=a;s+=b;s+=c; it should be written as S+=a + B + C; If you are collecting strings, such as multiple + = operations on the same string, it is best to use a cache. How to use it? Use a JavaScript array to collect, and finally join using the Join method, the following var buf = new Array (), for (var i = 0; i <; i++) {Buf.push (i.tostring ());} var all = Buf.join ("" ");

JS execution efficiency and performance improvement Program