Javascript 有人能给我解释一下用JS/jQuery创建网格的功能吗？

我正在学习jquery/js，我想创建由div组成的网格。这是一个脚本，但我不能完全理解它

function displayGrid (n) {
    var size = 960;
    var boxSize = (960 - 4*n)/n;
    var wrap = $(".wrap").html("");
    for (var j = 0; j < n; j++) {
        for (var i = 0; i < n; i++) {
            wrap.append( $("<div></div>").addClass("square").height(boxSize).width(boxSize) );
        }
        wrap.append($("<div></div>").css("clear", "both"));
    }
}

---

谢谢这里有一个基本的逐行解释

    function displayGrid (n) {
        var size = 960;    //MAX SIZE TO BE COVERED BY ALL DIVS ,EVEN IF THERE ARE N NO OF DIV'S

        var boxSize = (960 - 4*n)/n;  //FORMULA TO DECIDE WIDTH OF EACH DIV,CAN BE DIFFERENT TOO.

        var wrap = $(".wrap").html(""); //THIS IS A DIV PROBABLY WHERE YOU ARE ADDING THE NEW SMALLER DIVS

        for (var j = 0; j < n; j++) {
            for (var i = 0; i < n; i++) {
                  //TWO FOR LOOPS ,1 IS FOR LOOP THROUGH ROWS , OTHER FOR COLUMNS.

                wrap.append( $("<div></div>").addClass("square").height(boxSize).width(boxSize) );

//THIS APPENDS A BLANK DIV TO DIV WITH CLASS .WRAP, AND ADDS A CLASS SQAURE, AND ALSO WITH WIDTH AND HEIGHT PROPERTY SETS EACH DIVS PROPERTY OF WIDTH AND HEIGHT.
            }
            wrap.append($("<div></div>").css("clear", "both"));

          //THIS SHOULD BE TO MOVE TO NEXT COLUMN.
        } }

函数显示网格（n）{
var size=960；//所有DIV覆盖的最大大小，即使没有N个DIV
var-boxSize=（960-4*n）/n；//决定每个DIV宽度的公式也可以不同。
var wrap=$（“.wrap”）.html（“”；//这是一个DIV，可能是添加新的较小DIV的地方
对于（var j=0；j

以下是注释代码：

//n-> seems to be the number of times to divide the grid
//1-> will get 1 square
//2-> will get 4 square
//3-> will get 9 square and so on... n^2
function displayGrid (n) {
    var size = 960;

    //This seems to calculate size of the squares to fit inside the give area
    // of 960: 960/4
    //-4*n I guess is the border size to remove from each square in order to have an exact match
    var boxSize = (960 - 4*n)/n;

    //this get the grit container, empties it
    var wrap = $(".wrap").html("");

    //now print each square on the document 
    for (var j = 0; j < n; j++) { //columns
        for (var i = 0; i < n; i++) { //rows
            wrap.append( $("<div></div>").addClass("square").height(boxSize).width(boxSize) );
        }

        //this is done to go in the next row, since we are using divs...
        wrap.append($("<div></div>").css("clear", "both"));
    }
}

//n->似乎是划分网格的次数
//1->将得到1个正方形
//2->将得到4平方米
//3->将获得9平方米，依此类推。。。n^2
函数显示网格（n）{
变量大小=960；
//这似乎是为了计算适合给定区域的正方形的大小
//第960页：960/4页
//-4*n我猜是为了精确匹配而从每个正方形中删除的边框大小
var-boxSize=（960-4*n）/n；
//这会把沙砾容器倒空
var wrap=$（“.wrap”）.html（“”）；
//现在打印文档上的每个方块
对于（var j=0；j

差不多，只需注意公式中的

960-4*n

代表排水沟（

4px

）。但我认为它应该是

4*（n-1）

，因为总有1个槽比列数少。。。

//n-> seems to be the number of times to divide the grid
//1-> will get 1 square
//2-> will get 4 square
//3-> will get 9 square and so on... n^2
function displayGrid (n) {
    var size = 960;

    //This seems to calculate size of the squares to fit inside the give area
    // of 960: 960/4
    //-4*n I guess is the border size to remove from each square in order to have an exact match
    var boxSize = (960 - 4*n)/n;

    //this get the grit container, empties it
    var wrap = $(".wrap").html("");

    //now print each square on the document 
    for (var j = 0; j < n; j++) { //columns
        for (var i = 0; i < n; i++) { //rows
            wrap.append( $("<div></div>").addClass("square").height(boxSize).width(boxSize) );
        }

        //this is done to go in the next row, since we are using divs...
        wrap.append($("<div></div>").css("clear", "both"));
    }
}