[front end learning notes] save the front-end related codes

• Get the of the deployment project root Address

// Get the project url route 

function getRootPath() {
    
    // 1、 Get the current full path , Such as ： http://localhost:8080/springmvc/page/frame/test.html
    let curWwwPath = window.location.href;
    //  Get the current relative path ： /springmvc/page/frame/test.html
    let pathName = window.location.pathname;
    //  Get the host address , Such as ： http://localhost:8080
    let local = curWwwPath.substring(0, curWwwPath.indexOf(pathName));
    //  Get the belt "/" The project name , Such as ：/springmvc
    let projectName = pathName.substring(0, pathName.substr(1).indexOf('/') + 1);
    //http://localhost:xxxx/ Project name 
    return local + projectName;
}

// webapp The path of  http://localhost:xxxx/ Project name /
// window.location.href = getRootPath() + "/pages/index.html";