Example of js monitoring real-time changes in input input box value
1. Bind oninput and onporpertychanger events to the element at the same time
Example:
<script type="text/JavaScript">
function aa(e){alert("inputting!!");}
</script>
<input type="text" id="a" oninput="aa(event)" onporpertychange="aa(event)" />
2. Use native js to add listening events
<script type="text/javascript">
$(function(){
if("\v"=="v"){//true为IE浏览器，感兴趣的同学可以去搜下，据说是现有最流行的判断浏览器的方法
document.getElementById("a").attachEvent("onporpertychange",function(e){
console.log("inputting!!");
}
}else{
document.getElementById("a").addEventListener("onporpertychange",function(e){
console.log("inputting!!");
}
}
});
</script>
<input type="text" id="a"/>
3. Use the jQuery method to bind events
<script type="text/javascript">
$(function(){
$("#a").bind('input porpertychange',function(){
console.log("e");
});
});
</script>
<input type="text" id="a"/>
After listening to onpropertychange After the event, you can use the event's propertyName attribute to get the changed property name, event.propertyName
Instance 1:
Example 2:
$("#name").bind('input porpertychange',function(){
var thisTxt=$("#name").val();
$(this).siblings("p").html(thisTxt)
})
Example 3:
//手机号码分段显示
register.phonePropertychange = function() {
_this = register;
_input = $(this);
var v = $(this).val();
v = v.replace(new RegExp(/ /g),'');
var v1 = v.slice(0,3);
var v2 = v.slice(3,7);
var v3 = v.slice(7,11);
if(v2==''){
_input.focus().val(v1);
}else if(v3==''){
_input.focus().val(v1+' '+v2);
}else{
_input.focus().val(v1+' '+v2+ ' '+v3);
};
//手机号输入完成字体颜色改变
if (v.length === 11) {
if(_this.regexpPhone(v)){
_input.css('color','#000');
$('#btnSendCode').addClass('c-26a949');
_input.blur();;
}else{
layer.open({content: '手机号码不正确，请重新输入',time: 2, end:function(){
_input.val('');
}});
}
}else{
_input.css('color','#26a949');
}
}
//验证手机号
register.regexpPhone = function(phone){
return /^1[3|4|5|7|8]\d{9}$/.test(phone);
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