字符串函数 'refs/heads/main'.split('/')//result=list['refs','heads','main'] ['refs','heads','main'].join('/')//result=string'refs/heads/main' 'myplace'.replace('my','')//result=string'place' 'thisthatanother'.replace('th','',2)//result='isatanother' CEL表达式数字操作 定义json格式数据 { "count":2, "measure":1.7 } ...