// 冗余switch(data){
case1:test1();break;case2:test2();break;case3:test();break;// so on...}// 简洁var data ={
1: test1,2: test2,3: test
};
data[anything]&& data[anything]();
7.多行字符串
// 冗余const data ='abc abc abc abc abc abc\n\t'+'test test,test test test test\n\t'// 简洁const data =`abc abc abc abc abc abc
test test,test test test test`