This time I will show you how to use js to store key values in a project, and what are the precautions for using js to store key values in a project. The following is a practical case, let's take a look.
The front end sometimes needs to store key-value pairs. The main point is that the key must be a string. It is important to note again that the key needs to be a string.
Key content
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
var map={
key1:'abc',
key2:'def'
};
$(document).ready(function(){
$("button").click(function(){
map.key3=333;//js 里的键必须为字符串
for(var key in map){//可以迭代键
alert(map[key])//依据键取值
}
alert("add value:"+map.key3);
});
});
</script>
</head>
<body>
<button>click</button>
</body>
</html>I believe you have mastered the method after reading the case in this article. For more exciting content, please pay attention to other php Chinese websites related articles!
Recommended reading:
Postman simulates sending token
##Watchers, components and routing control in Vue.js
The above is the detailed content of How to store key values in js in the project. For more information, please follow other related articles on the PHP Chinese website!
What are the methods of executing Shell scripts?
The main dangers of Trojan viruses
Advantages of spring boot framework
A complete list of commonly used public dns
Compare the similarities and differences between two columns of data in excel
Regular usage of grep
What is the return value of the function
How to draw pert diagram
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
