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1.每隔4位数字后加","号。
<input type=‘text‘ id="test" placeholder="输入数字每隔4位后加,号">
window.onload=function(){ document.getElementById("test").onkeyup=function(){ var regex=new RegExp(/\d/); if(!regex.test(this.value)){ this.style.border="1px dashed red"; }else{ this.style.border="1px solid black"; this.value=this.value.replace(/(\d{4})(?=\d)/,"$1,"); } } }
2.将空格替换为‘,’和‘“,”’
var showT=document.getElementById(‘showT‘); function addcomma(){ var textAreaV=document.getElementById(‘textArea‘).value; showT.innerHTML=textAreaV.replace(/\s/g,","); } function addquo(){ var textAreaV=document.getElementById(‘textArea‘).value; showT.innerHTML=textAreaV.replace(/\s/g,"‘,‘"); }
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原文地址:http://www.cnblogs.com/cm1236/p/5607825.html