Browser compatibility issues with new Date()

When creating a date object with new Date(str);:

Google Chrome:

Firefox browser:

Internet Explorer:

It can be seen that the date generated under the ie browser is illegal. After consulting the data, it is found that ie does not support "-", while "/" is supported under all browsers, so the processing is as follows:

var str = "2018-05-02 20:00:00";
var dateStr = new Date(str.replace(/-/g,"/"));
dateStr

Use "/" to connect, all browsers are correct.