CODEWITHSUNDEEP
javascript
alyn000r
alyn000r

Reputation: 566

JavaScript Memory Leak Issue

I am working on a piece of code that has a substancial memory leak, I am posting an example function but my entire 11,000 line code has similar functions repeated all over. I am experiencing an average of 5Mb memory leak when I click the Refresh Button. The logic behind the refresh button is to call the empty function of the object. I have researched all over for cyclic references and closures but I am not really sure if the way I set everything to an empty array is correct or should I set everything to null ? Any help would be great. I have to use IE as the app is on IE. Sadly no chrome tools for me :( 

/**
 * Represents the tasks for the currently loaded patients.
 */
var foo = {
    loaded: false,
    overdueTaskCounts: [],
    unscheduledTaskCounts: [],
    currentTaskCounts: [],
    scheduled: null,
    patientTasks: {},
    tasks: {},
    taskNumber: 0,

    /**
     * Unpacks the JSON received from the CareCompass service for the CareCompass task counts.
     * @param reply - The JSON representing the data returned from the CareCompass service.
     */
    unpack: function unpackTasks(reply) {
        var taskCounts = reply.data; * * //This function populates the variables declared above**//
        this.scheduled = taskCounts.scheduled;
    },
    /**
     * Removes all the task information related to the loaded patients.
     * @param none
     */
    empty: function emptyTasks() {
        this.loaded = false;
        this.overdueTaskCounts = [];
        this.unscheduledTaskCounts = [];
        this.currentTaskCounts = [];
        this.scheduled = null;
        this.patientTasks = {};
    }
}

Upvotes: 2

Views: 225

Answers (1)

Geuis
Geuis

Reputation: 42277

This video from Google I/O will show you how memory leaks happen and how to debug your app. http://www.youtube.com/watch?v=x9Jlu_h_Lyw

Grab some coffee and get ready for a great video.

Upvotes: 3

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