[英]Processing and outputting data from an array from input fields
在单击事件中,我需要从几个输入字段中获取一些数字,找到这些数字的总数,分别对这些数字进行一些数学运算(包括将每个数字除以总数),然后分别在其他地方依次输出新数字。
这是一个截图,如果有帮助的话:
到目前为止,我已经通过将输入推入数组来实现这一目标。 但是无论出于什么原因,我都无法弄清楚如何对数组中的数字进行数学运算,然后将其输出到其他位置。
任何伪代码或技巧都将非常有用。
我已经测试并删除了其他内容达一百万次,但这就是我的目的。
HTML:
<div class="input-grid">
<div class="input-row">
<div class="input-box"><input type="text"><span class="input-unit">px</span></div>
<i class="fa fa-chevron-right"></i>
<span class="input-response">1.541</span>
</div>
<div class="input-row">
<div class="input-box"><input type="text"><span class="input-unit">px</span></div>
<i class="fa fa-chevron-right"></i>
<span class="input-response">1.542</span>
</div>
<div class="input-row">
<div class="input-box"><input type="text"><span class="input-unit">px</span></div>
<i class="fa fa-chevron-right"></i>
<span class="input-response">1.543</span>
</div>
<div class="input-row">
<div class="input-box"><input type="text"><span class="input-unit">px</span></div>
<i class="fa fa-chevron-right"></i>
<span class="input-response">1.544</span>
</div>
</div>
<div class="btn-wrap">
<span class="calc-btn">calculate</span>
<span class="reset-btn">reset</span>
</div>
JS:
$('.calc-btn').click(function(){
var inputs = [];
function collectInputs(array){
$('input').each(function(){
array.push($(this).val());
});
}
collectInputs(inputs);
});
JS
$('.calc-btn').click(function(){
var inputs = [];
var total = 0;
$('.input-box input').each(function(){
inputs.push($(this).val());
total = total + ($(this).val());
});
var minvalue = Math.min.apply(Math,inputs); // get minimum value in array
var count_array = inputs.length; // number of elements in array
//calculation part
for (i = 0; i < inputs.length; ++i) {
inputs[i] = ((inputs[i] / total) * 10); / minvalue;
inputs[i] = inputs[i].toFixed(3);
}
});
小提琴: http : //jsfiddle.net/KDqts/3/
var numbers = [];
//take some numbers from several input fields,
$('.myFields').each(function() {
numbers.push($(this).val());
});
//find the total of those numbers,
var total = 0;
$.each(numbers, function() {
total += this;
});
//do some math on those numbers individually
var processed = [];
$.each(numbers, function(i) {
//(including diving each by the total),
processed[i] = this / total;
});
//and output new numbers in order,
processed.sort();
$.each(numbers, function() {
//individually, somewhere else.
$('#somewhere').val(this);
});
$('.calc-btn').click(function(){
var minVal=Infinity;
/* create array, get minVal, and sort*/
var arr= $('input').map(function(){
var val=1*$(this).val();
minVal = val < minVal ? val : minVal;
return val
}).get().sort();
/* do math on array*/
$.each(arr, function(i, val){
arr[i]= val *10 /minVal;
});
/* do something with `arr`*/
});
花了一段时间,但我发现了(有很多帮助)。 谢谢阿妮!
HTML:
<div class="input-grid">
<div class="input-row">
<div class="input-box"><input type="text"><span class="input-unit">px</span></div>
<i class="fa fa-chevron-right"></i>
<span class="input-response">1.541</span>
</div>
<div class="input-row">
<div class="input-box"><input type="text"><span class="input-unit">px</span></div>
<i class="fa fa-chevron-right"></i>
<span class="input-response">1.542</span>
</div>
<div class="input-row">
<div class="input-box"><input type="text"><span class="input-unit">px</span></div>
<i class="fa fa-chevron-right"></i>
<span class="input-response">1.543</span>
</div>
<div class="input-row">
<div class="input-box"><input type="text"><span class="input-unit">px</span></div>
<i class="fa fa-chevron-right"></i>
<span class="input-response">1.544</span>
</div>
</div>
<div class="btn-wrap">
<span class="calc-btn">calculate</span>
<span class="reset-btn">reset</span>
</div>
JS:
$('.calc-btn').click(function(){
var inputs = [];
var total = 0;
$('.input-box input').each(function(){
var num = parseFloat($(this).val());
inputs.push(num);
total = total + (num);
});
var minValue = Math.min.apply(Math,inputs); // get minimum value in array
var count_array = inputs.length; // number of elements in array
//calculation part
for (i = 0; i < inputs.length; i++) {
inputs[i] = ((inputs[i] / total) * 1000)/ minValue;
inputs[i] = inputs[i].toFixed(3);
}
$('span.input-response').each(function(i){
$(this).text(inputs[i]);
});
});
一个主要问题是我需要使用parseFloat将值转换为整数,然后再将它们压入数组。 另一个问题是弄清楚如何将最终答案四舍五入到我用来toFixed()的管理小数位数; 对于。 感谢大家的帮助!
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