// let obj = { // name: '', // age: '', // date: '', // price: 123, // size: '', // count: "', // console.log('hobby' in obj) // let count = (function(param) {let img = new Image() let SRC = 'www.baidu.com?' for(i in param) { src += i + '=' + param[i] } })() count({name: 10})Copy the code