Web前端银行卡号分段输入效果(如：6225 7687 0971 2222)
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// 输入银行卡号时的分段处理效果(如：6225 7687 0971 2222)function convertSpace(obj){ var val = $.trim(obj.value).replace(/\s/g, ''); var val2 = ""; var len = 0; for (var i = 0; i < val.length; i++) { var ch = val.charAt(i); if(ch >= 0 && ch <= 9) { val2 += ch; ++len; if (len % 4 == 0) { val2 += ' '; } } } if(val2.substring(val2.length-1,val2.length)== ' ') { val2 = val2.substring(0,val2.length-1) } if(obj.value != val2) { var pos = getPositionForInput(obj); obj.value = val2; if(pos != val2.length) { if(val2.charAt(pos - 1) == ' ') { pos++; } setPositionForInput(obj, pos); } }}