Reference: https://blog.csdn.net/kongjiea/article/details/45578033
Rendering:
html
<h1>div horizontal drag sorting</h1>
<div class="box">
<div class="horizontal-div" id="div1">div1</div>
<div class="horizontal-div" id="div2">div2</div>
<div class="horizontal-div" id="div3">div3</div>
<div class="horizontal-div" id="div4">div4</div>
<!--<div class="horizontal-div" id="div5">div5</div> -->
</div>
css
body,div{
padding: 0px;
margin: 0px;
}
.box {
margin-left: 15px;
padding : 10px;
padding-right: 0px;
width : 810px;
height : 150px;
border : blue solid 1px;
}
.horizontal-div{
float : left;
margin-right: 10px;
border: #000 solid 1px;
text-align: center;
width : 150px;
height : 150px;
}
.horizontal-div-dash {
position: absolute;
width: 150px;
height: 150px;
margin-right: 10px;
border: 1px dashed blue;
background: #ececec;
opacity: 0.7;
}
.dash {
float : left;
width: 150px;
height: 150px;
margin-right: 10px;
border: 1px dashed #f00;
};
js
$(document).ready( function () {
var range = { x: 0, y: 0 };//Mouse element offset
var lastPos = { x: 0, y: 0, x1: 0, y1: 0 }; //The four coordinates of the dragged object
var tarPos = { x: 0, y: 0, x1: 0, y1: 0 }; //Coordinate initialization of the target element object
var theDiv = null, move = false; choose = false; //Drag object drag state selected state
var theDivId =0, theDivHeight = 0, theDivHalf = 0; tarFirstY = 0; //Initialization of the index, height, and dragging object.
var tarDiv = null, tarFirst, tempDiv; //The object of the target element to be inserted, a temporary dashed object
var initPos = {x: 0, y: 0};
$(".horizontal-div").each(function(){
$(this).mousedown(function (event){
choose = true;
//Drag object
theDiv = $(this);
//Record the initial position of the dragged element
initPos.x = theDiv.offset().left;
initPos.y = theDiv.offset().top;
//relative offset of mouse element
range.x = event.pageX - theDiv.offset().left;
range.y = event.pageY - theDiv.offset().top;
theDivId = theDiv.index();
theDivWidth = theDiv.width();
theDivHalf = theDivWidth/2;
theDiv.attr("class","horizontal-div-dash");
theDiv.css({left: initPos.x + 'px',top: initPos.y + 'px'});
// Create a new element and insert the position before the dragged element (dashed box)
$("<div class='dash'></div>").insertBefore(theDiv);
tempDiv = $(".dash");
});
});
$(document).mouseup(function(event) {
if(!choose){return false;}
if(!move){
theDiv.attr("class", "horizontal-div");
tempDiv.remove(); // remove the newly created dashed div
choose = false;
return false;
}
theDiv.insertBefore(tempDiv); // Insert the drag element to the position of the dotted div
theDiv.attr("class", "horizontal-div"); //Restore the initial style of the object
tempDiv.remove(); // remove the newly created dashed div
move = false;
choose = false;
}).mousemove(function(event) {
if(!choose) return false;
move = true;
lastPos.x = event.pageX - range.x;
lastPos.y = event.pageY - range.y;
lastPos.x1 = lastPos.x + theDivWidth;
// Drag the element to move with the mouse
theDiv.css({left: lastPos.x + 'px',top: lastPos.y + 'px'});
// The drag element moves with the mouse to find the insertion target element
var $main = $('.horizontal-div'); // Local variables: get the coordinates of each element again in the rearranged order,
$main.each(function () {
tarDiv = $(this);
tarPos.x = tarDiv.offset().left;
tarPos.y = tarDiv.offset().top;
tarPos.x1 = tarPos.x + tarDiv.width()/2;
tarFirst = $main.eq(0); // get the first element
tarFirstX = tarFirst.offset().left + theDivHalf ; // center ordinate of the first element object
// Drag the object to move to the first position
if (lastPos.x <= tarFirstX) {
tempDiv.insertBefore(tarFirst);
}
//After judging the coordinates of the target element to be inserted, insert directly
if (lastPos.x >= tarPos.x - theDivHalf && lastPos.x1 >= tarPos.x1 ) {
tempDiv.insertAfter(tarDiv);
}
});
});
});