javascript中的数字与字符串相加实例分析_javascript技巧: 代码如下: console.log('----1----') console.log('12' + '34')//'1234' console.log('12' + 34 )//'1234' console.log(12 + '34')//'1234' console.log(12 + 34 )//46 console.log('----2----')