计算动态创建的DOM中的值
我创建了一个在DOM中动态创建的html表。 它有4列,其中两列将具有用户可以输入值的tetbox,然后将其作为最后一列中的值减去。 ‘Delta’=’State Before’ – ‘State After’。 我可以在输入时获取值,但不知道如何获取其他字段的值来进行计算。
HTML
Department State Before State After Delta
JAVASCRIPT
var deptArray = ["Human Resources", "Accounting and Finance", "IT", "Marketing", "Purchasing Department"]; var state = ["stateBefore", "stateAfter", "Delta"]; for(var x=0; x<deptArray.length; x++) { var html = ""; html +=""+deptArray[x]+" "; for(var y=0; y<state.length; y++) { if (state[y] === "stateBefore") { html += " "; }else if (state[y] === "stateAfter") { html += " "; }else if (state[y] === "Delta") { html += " "; } } html += " "; $("#deptState").append(html); } var allTextBoxes = document.querySelector("#deptState"); console.dir(allTextBoxes); allTextBoxes.addEventListener("change", function( e ){ if (e.target.tagName === 'INPUT'){ alert("Value: "+document.getElementById(e.target.id).value); console.log("Save data to SharePoint list"); } })
它更容易展示。 这是jsfiddle:
在其中一行中,在“State Before”中输入9,在“State After”中输入5。 ‘Delta’应该有4
http://jsfiddle.net/isogunro/pq4uref9/
试试这个 :
if (e.target.tagName === 'INPUT'){ // start var rowNode = e.target.parentNode.parentNode; var rowInputs = rowNode.getElementsByTagName('input'); var before = rowInputs[0].value || 0; var after = rowInputs[1].value || 0; if(before && after){ rowInputs[2].value = before - after; } // end alert("Value: "+document.getElementById(e.target.id).value); console.log("Save data to SharePoint list"); }
使用一个共同的类:
var deptArray = ["Human Resources", "Accounting and Finance", "IT", "Marketing", "Purchasing Department"]; var state = ["stateBefore", "stateAfter", "Delta"]; for(var x=0; x"+deptArray[x]+""; for(var y=0; y"; }else if (state[y] === "stateAfter") { html += " "; }else if (state[y] === "Delta") { html += " "; } } html += ""; $("#deptState").append(html); } var allTextBoxes = document.querySelector("#deptState"); console.dir(allTextBoxes); allTextBoxes.addEventListener("change", function( e ){ if (e.target.tagName === 'INPUT'){ alert("Value: "+document.getElementById(e.target.id).value); console.log("Save data to SharePoint list"); } });
现在,在State After之后输入时,获取当前行delta值:
$('.state-after').focusout(function(){ var stateBefore=$(this).closest('tr').find('.state-before').val(); var stateAfter=$(this).closest('tr').find('.state-after').val(); var delta=(stateBefore-stateAfter); $(this).closest('tr').find('.delta').val(delta); console.log(delta); });
检查更新的小提琴 :
我已经把它变得更加精彩了。 我已经使用jQueries来处理动态添加元素的事件。
然后我们从已进行更改的行中获取所有输入并执行操作
var deptArray = ["Human Resources", "Accounting and Finance", "IT", "Marketing", "Purchasing Department"]; var state = ["stateBefore", "stateAfter", "Delta"]; for(var x=0; x"+deptArray[x]+""; for(var y=0; y"; }else if (state[y] === "stateAfter") { //alert(state[1]); html += " "; }else if (state[y] === "Delta") { //alert(state[2]); html += " "; } } html += ""; //document.getElementById("#deptState").appendChild(html); $("#deptState").append(html); } $("#deptState").on("change", "input[type='text']", function(){ var inputs = $(this).closest("tr").find("input[type='text']"); var fldBefore = inputs[0]; var fldAfter = inputs[1]; var fldDelta = inputs[2]; if($(fldBefore).val().length > 0 && $(fldAfter).val().length > 0) { alert("Value: "+$(this).val()); console.log("Save data to SharePoint list"); $(fldDelta).val($(fldBefore).val() - $(fldAfter).val()) ; } });
Department State Before State After Delta