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这次给大家带来jQuery自定义框并获取框内数据,jQuery自定义框并获取框内数据的注意事项有哪些,下面就是实战案例,一起来看一下。
jquery库:
jquery -1.10.2.min.js,jQuery UI - v1.12.1。
jQuery 代码
不多说了,之间上代码。不懂的地方看注释。
<script type="text/javascript"> //鼠标按下时的X Y坐标 varmouseDownX; varmouseDownY; //鼠标按下时移动的X Y 坐标 varmouseMoveX; varmouseMoveY; //移动的状态 varisMove =false; /*初始化 选择框 */ functioninit() { $("#selected").css("display","none"); $("#selected").css("top","0"); $("#selected").css("left","0"); $("#selected").css("width","0"); $("#selected").css("height","0"); } $(document).ready(function() { init(); varselectedTD =newArray();//创建被选中表格数组 varTD = $("td");//获取所有表格信息 for(vari = 0; i < TD.length; i++) { selectedTD.push(TD[i]); } $("#tablep").mousedown(function(event) { mouseDownX = event.clientX - $(this).offset().left;; mouseDownY = event.clientY - $(this).offset().top; console.log("mouseDownX="+ mouseDownX +" mouseDownY="+ mouseDownY ); if(event.target.id.match(/selected/)) { isMove =true; } //鼠标按下并移动时进行判断(拖拽 or 画框) $("#tablep").mousemove(function(event) { mouseMoveX = event.clientX - $(this).offset().left; mouseMoveY = event.clientY - $(this).offset().top; varselectp = document.getElementById("selected"); if(isMove) { //拖拽的代码,因为实在不想算 xy 了,所以使用了jquery ui $("#selected").draggable(); //这部分是负责画框的时候,实时把框住的表格变色的,(代码和下面的代码重复了) varleft = selectp.offsetLeft, top = selectp.offsetTop; width = selectp.offsetWidth, height = selectp.offsetHeight; for(vari = 0; i < selectedTD.length; i++) { varsl = selectedTD[i].offsetWidth + selectedTD[i].offsetLeft; varst = selectedTD[i].offsetHeight + selectedTD[i].offsetTop; if(sl > left && st > top && selectedTD[i].offsetLeft < left + width && selectedTD[i].offsetTop < top + height) { if(selectedTD[i].className.indexOf("selected") == -1) { selectedTD[i].className ="selected"; } }else{ if(selectedTD[i].className.indexOf("selected") != -1) { selectedTD[i].className ="TD"; } } } }else{ //重复的代码,完了再把它抽取出来 varleft = selectp.offsetLeft, top = selectp.offsetTop; width = selectp.offsetWidth, height = selectp.offsetHeight; for(vari = 0; i < selectedTD.length; i++) { varsl = selectedTD[i].offsetWidth + selectedTD[i].offsetLeft; varst = selectedTD[i].offsetHeight + selectedTD[i].offsetTop; if(sl > left && st > top && selectedTD[i].offsetLeft < left + width && selectedTD[i].offsetTop < top + height) { if(selectedTD[i].className.indexOf("selected") == -1) { selectedTD[i].className ="selected"; } }else{ if(selectedTD[i].className.indexOf("selected") != -1) { selectedTD[i].className ="TD"; } } } //鼠标抬起结束画框,和拖动 $("#tablep").mouseup(function() { console.log("mouseUpX="+ mouseMoveX +" mouseUpY="+ mouseMoveX); isMove =false; $(this).unbind('mousemove'); }) //画框 displaySelected(mouseDownY, mouseDownX, mouseMoveX, mouseMoveY); } }) }) //当鼠标在已经画好的框上时,改变鼠标指针样式,就是十字形了 $("#selected").mouseenter(function() { $("#selected").css("cursor","move"); }); }); functiondisplaySelected(mouseDownY, mouseDownX, mouseUpX, mouseUpY) { $("#selected").css("display","block"); $("#selected").css("top", mouseDownY); $("#selected").css("left", mouseDownX); varmoveX = mouseMoveX - mouseDownX; varmoveY = mouseMoveY - mouseDownY; if(moveY < 0) { $("#selected").css("top", event.clientY - $("#table").offset().top); } if(moveX < 0) { $("#selected").css("left", event.clientX - $("#table").offset().left); } $("#selected").css("width", Math.abs(moveX)); $("#selected").css("height", Math.abs(moveY)); } </script>
测试用的html
使用table进行的测试:
<p id="tablep"style="width: 1500px; height: 1500px;top: 100px; left:100px; position: absolute;"> <p id="selected"style="border:5px dotted rgb(239, 37, 17);position: absolute;display: none;"></p> <table border="1"style=" width: 1500px; height: 1500px;"id="table"> <tr> <td id="1"class="TD"></td> <td id="2"class="TD"></td> <td id="3"class="TD"></td> <td id="4"class="TD"></td> <td id="5"class="TD"></td> <td id="6"class="TD"></td> </tr> <tr> <td id="7"class="TD"></td> <td id="8"class="TD"></td> <td id="9"class="TD"></td> <td id="10"class="TD"></td> <td id="11"class="TD"></td> <td id="12"class="TD"></td> </tr> <tr> <td id="1"class="TD"></td> <td id="2"class="TD"></td> <td id="3"class="TD"></td> <td id="4"class="TD"></td> <td id="5"class="TD"></td> <td id="6"class="TD"></td> </tr> </table> <!--表格代码太多所以...--> </p>
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