好的。所以我正在为英制和公制制造BMI计算器。公式有效,当它不是表单时,文本显示,但我需要把它放在一个表单中进行验证 - 这就是我的问题所在。提交按钮只是刷新页面而不是显示文本。我不确定我应该添加什么,所以它只显示文本而不是刷新整个页面。窗体正在重置页面而不是显示文字
我的JS -
$(function(calculateBMI) {
// when the text field gets focus it gets ride of the default value
//:text makes the browser check for ALL text fields
$(':text').focus(function() {
console.log('got focus');
var field = $(this);
//basically asks - is it blank? if not, put default value in
if (field.val()==field.prop('defaultValue')) {
field.val('');
}
});
$(':text').blur(function() {
console.log('lost focus');
var field = $(this);
//basically asks - is it blank? if not, put default value in
if (field.val()=='') {
field.val(field.prop('defaultValue'));
}
});
$('#imperialunits').validate();
$('#metricunits').validate();
}); // end ready
function bmiCalcI(){
var iHeightFeet=Number(document.getElementById("iHeightFeet").value);
var iHeightInch=Number(document.getElementById("iHeightInch").value);
var iHeight=(iHeightFeet * 12)+iHeightInch;
var iWeight=Number(document.getElementById("iWeight").value);
var calcI_1=iWeight * 703;
var calcI_2=iHeight * iHeight;
var calcI_3=Math.round(calcI_1/calcI_2);
$("#outputI").text("Your BMI is: " + calcI_3);
}
function bmiCalcM(){
var mHeight=Number(document.getElementById("mHeight").value);
var mWeight=Number(document.getElementById("mWeight").value);
var calcM_1=mHeight/100
var calcM_2=calcM_1 * calcM_1;
var calcM_3=Math.round(mWeight/calcM_2);
$("#outputM").text("Your BMI is: " + calcM_3);
}
</script>
而我的HTML
<div class="results">
<div id="imperialunits tabs-1" class="calc">
<h3>Imperial Units</h3>
<p>Height:</p>
<form id="imperial">
<input type="text" id="iHeightFeet" value="ft" class="required digits">
<input type="text" id="iHeightInch" value="in" class="required digits">
<p>Weight:</p>
<input type="text" id="iWeight" value="lbs" class="required digits">
<input type="submit" value="bmiCalcI" onclick="bmiCalcI();">
<div id="outputI"></div>
</form>
</div>
<div id="metricunits tabs-2" class="calc">
<h3>Metric Units</h3>
<form id="metric">
<input type="text" id="mHeight" value="cm" class="required digits">
<p>Weight:</p>
<input type="text" id="mWeight" value="kg" class="required digits">
<input type="submit" value="bmiCalcM" onclick="bmiCalcM();">
<div id="outputM"></div>
</form>
</div>
</div>
的的onsubmit = “返回false;”非常棒!谢谢! –