playground: Format function.
playground: Format function.

nmfzone/gopherjs,gopherjs/gopherjs,Yanjing123/gopherjs,ebroder/gopherjs,nmfzone/gopherjs,ebroder/gopherjs,Yanjing123/gopherjs,Archs/gopherjs,jeremyschlatter/gopherjs,Yanjing123/gopherjs,govlas/gopherjs,nmfzone/gopherjs,ebroder/gopherjs,albrow/gopherjs,gopherjs/gopherjs,bpowers/gopherjs,govlas/gopherjs,govlas/gopherjs,rasata/gopherjs,gopherjs/gopherjs,jargv/gopherjs,gopherjs/gopherjs,Archs/gopherjs,Archs/gopherjs,rasata/gopherjs,jeremyschlatter/gopherjs,jargv/gopherjs,rasata/gopherjs,flimzy/gopherjs,jargv/gopherjs,bpowers/gopherjs,roth1002/gopherjs,roth1002/gopherjs,albrow/gopherjs,gopherjs/gopherjs,jeremyschlatter/gopherjs,flimzy/gopherjs,albrow/gopherjs,flimzy/gopherjs,roth1002/gopherjs,bpowers/gopherjs