<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script>
//
let string = 'http://www.baidu.com?a=1&b=2&c=3';
query(string)
function query(string) {
// console.log(string) // http://www.baidu.com?a=1&b=2&c=3
let arr=string.split("?") //截取字符，变为伪数组
// console.log(arr) // ["http://www.baidu.com", "a=1&b=2&c=3"]
let arr1=arr[1].split("&"); //截取字符，变为伪数组
// console.log(arr1) // ["a=1", "b=2", "c=3"]
let obj={}
for (let i=0;i<arr1.length;i++){ //便利数组
// console.log(i) //0 1 2
let arr2=arr1[i].split("=") //截取arr1下面的每个=
// console.log(arr2) ["a", "1"] ["b", "2"] ["c", "3"]
obj[arr2[0]]=arr2[1] //让obj[arr2数组下的每个下标为0的]=arr2的数组下的每个下标为1的
}
console.log(obj) //{a: "1", b: "2", c: "3"}
console.log( typeof obj) //object
return obj
}
</script>
</body>
</html>
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