关于 javascript：如何根据分配给当前单击元素的数据从 localStorage 中删除 JSON 对象？ | 珊瑚贝

events:189 Object {
    sess_id   : 182104,
    name      :“AUTOMECH FORMULA”,
    city      :“Cairo”,
    country   :“Egypt”,
    event_url :“automech-formula”
}

function favaorite(sess_id,name,city,country,event_url,pointer){
    var eventData;
    //is anything in localstorage?
    if (localStorage.getItem(‘eventData’) === null) {
        eventData = [];
    }else{
        // Parse the serialized data back into an array of objects
        eventData = JSON.parse(localStorage.getItem(‘eventData’));
        console.log(eventData);  
    }
    var details={};
    details.sess_id   = sess_id;
    details.name      = name;
    details.city      = city;
    details.country   = country;
    details.event_url = event_url;

    // Push the new data (whether it be an object or anything else) onto the array
    eventData.push(details);

    if (toggle == 1){
        console.log(“1”);
        $(pointer).closest(‘.evt_date’).find(‘.favourate_dextop’).css(‘background-image’, ‘url(“‘ + image2 + ‘”)’);
        toggle = 0;
    }else{
        console.log(“2”);
        $(pointer).closest(‘.evt_date’).find(‘.favourate_dextop’).css(‘background-image’, ‘url(“‘ + image1 + ‘”)’);
        $.each(eventData, function(key, value){
            console.log(value);
            //$(‘#fav’+ delete value.sess_id + ”);
            //$(‘#fav’+ delete value.name + ”);
            //$(‘#fav’+ delete value.city + ”);
            //$(‘#fav’+ delete value.country + ”);
            //$(‘#fav’+ delete value.event_url + ”);
            delete value.sess_id;
            delete value.name;
            delete value.city;
            delete value.country;
            delete value.event_url;            
            //localStorage.removeItem(value.sess_id);

        });
        toggle = 1;
    }
    // Alert the array value
    // alert(eventData);  // Should be something like [Object array]
    // Re-serialize the array back into a string and store it in localStorage
    var jsondata=localStorage.setItem(‘eventData’, JSON.stringify(eventData));
    console.log(jsondata);
}

    // declare an empty object (not array):
    var eventData = {};
    // check localStorage first after the page is ready (not on click):
    if (localStorage.getItem(‘eventData’) !== null) {
        // if there’s any faved link in the localstorage, highlight it:
        $.each(eventData = JSON.parse(localStorage.getItem(‘eventData’)), function(id){
            $(‘#’+id).addClass(‘faved’);
        });
    }

    // instead of ‘onclick’ attribute, use jQuery .click() event handler:
    $(‘.favourate_dextop’).click(function(e){
        // prevent default link click (instead of using”javascript:void(0);” in a href attribute):
        e.preventDefault();
        // check if the link”id” attribute (this.id) exists in the object:
        if (eventData[this.id] !== undefined) {
            // if so, delete it:
            delete eventData[this.id];
        }else{
            // if not, add it:
            // the .data() method gets all ‘data’ attributes of the element (as an objct)
            eventData[this.id] = $(this).data();
        }
        // toggle ‘.faved’ class:
        $(this).toggleClass(‘faved’);
        // update localstorage:
        localStorage.setItem(‘eventData’, JSON.stringify(eventData));
    });    
});