jquery - javascript element ":last" confusion -

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i have question interaction of javascript code html code.

in part of lecture i'm working on, i'm put in work info .js file using for-loop, interacts other .js , .html file output job/role onto index.html , did so:

for (var = 0; < work.length; i++) {     var role = htmlworktitle.replace("%data%",work[i].role);     var employer = htmlworkemployer.replace("%data%",work[i].name);     var description = htmlworkdescription.replace("%data%",work[i].description);     var employerinfo = employer + role;     $("#workexperience").append(htmlworkstart);     $(".work-entry:last").append(employerinfo); }

the code works fine, i'm trying understand why need ":last" in ".work-entry:last". other file, helper.js has 1 element entry "work-entry" begin with, shown below:

var htmlworkstart = '<div class="work-entry"></div>'; var htmlworkemployer = '<a href="#">%data%'; var htmlworktitle = ' - %data%</a>';

so tried taking out ":last" , result started making random repetitions "employerinfo" output.

:last jquery specific meta-selector. please see example in documentation clarification. select last element in current selection. since work-entry css-class hints, there might multiple dom elements assigned class. code seems want append employerinfo last work-entry on page. suppose code executed, after new employer added dom. if wouldn't have :last append current employerinfo existing employers aswell instead of newly appended one.


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