JavaScript (ES6) new feature learning hub

Collect and summarize some new features in Js

(1) Template string

In javascript, it is usually necessary to concatenate multiple strings, which can be concatenated with +

        var name = 'varus';
        var age = 23;
        var message = "你好,我是"+name+",今年"+age+"岁了！";
        alert(message);

However, when there are many variables that need to be connected, it is easy to make mistakes with + connection. In ES6, a template string is added to facilitate the operation of strings. Not many browsers currently support it. .

        var name = 'varus';
        var age = 23;
        var message = "你好,我是${name},今年${age}岁了！";
        alert(message);

(two)