<script>
extend = function (a, b) { //合并对象
if (typeof a !== "object" || typeof b !== "object") {
return;
}
for (key in b) {
a[key] = b[key];
}
return a;
};
extend(Math, {
/*************格式化数值***************/
format: function (num, style) {
if (!/#+([^#]+)?(#+)(?:\.(#+))?/.test(style)) {
return;
}
//分割符
var split = RegExp.$1;
//保留小数位数
num = parseFloat(num).toFixed(RegExp.$3.length);
var re = new RegExp('(\\d{1,' + RegExp.$2.length + '})(?=(\\d{' + RegExp.$2.length + '})+(?:$|\\.))', 'g');
//console.log(re);
if(!/(-?\d+)(?:\.(\d+))?/.test(num)){
return;
}
var d = (RegExp.$2 ? '.' + RegExp.$2 : ''),
str = RegExp.$1.replace(re, function (a, b, c, d) {
return b + split;
});
return str + d;
}
});
$(function(){
var total = 0;
$('.int').each(function(){
$(this).keypress(function(event){
if(!((event.charCode >= 48 && event.charCode <= 57) || event.charCode === 46 || event.charCode === 45 || event.charCode === 0)){
if(event.preventDefault){
event.preventDefault()
}else{
event.returnValue = false;
}
}
}).keyup(function(){
total = 0;
$('.int').each(function(){
if($(this).val() === '.' || $(this).val() === '-'){
return;
}
total += parseFloat($(this).val() || 0);
});
$('.total').html(Math.format(total,'#,###.##'));
});
});
});
</script>
<body>
<div>
<input type="text" class="int">
<input type="text" class="int">
<input type="text" class="int">
<input type="text" class="int">
<input type="text" class="int">
<input type="text" class="int">
<input type="text" class="int">
<input type="text" class="int">
总和：<div class="total"></div>
</div>
</body>
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