So my code here takes some parameters and then creates an SQLesque type of string (JQL). function makeJQL(status, project, priority, description, summary){    var arr = new Array();    // Could put a null check here if all parametres are undefined        if(status.length > 0){            jql = status=+''+status+'';            arr.push(jql)        }        if(project.length > 0){            jql = project=+''+project+'';            arr.push(jql)        }        if(priority.length > 0){            jql = priority=+''+priority+'';            arr.push(jql)        }        if(description.length > 0){            jql = description=+''+description+'';            arr.push(jql)        }        if(summary.length > 0){            jql = summary=+''+ summary +'';            arr.push(jql)        }        var jql = ;        for(var i = 0; i < arr.length; i++){            jql = jql + arr[i]+ ' AND '        }        jql = jql.substring(0, jql.length - 5);        return jql}The only thing is, is that there is a lot of code repetition, but I don't know how to overcome this really. I also haven't put a null check in because if the function is called, there has to be parameters passed.
A more efficient way to make JQL (Jira Query Language)
javascript
Instead of passing parameters to this function you can pass a single object and iterate through it.// instead of thismakeJQL(status, project, priority, description, summary);// Try something like this makeJQL({    status: status,    project: project,    priority: priority});And to itinerate the object passed to the function you can use Object.keys():makeJQL: function(jqlObject){    var arr = new Array();    Object.keys(jqlObject).forEach(function(key) {          array.push(key + =+''+ jqlObject[key] +'');    });}Other good practice would be implement a function for each request in your application, creating a makeSomethingJQL will increase the readability of your code.