js检测元素value改变
2015-07-22 17:59
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<input type="text" id="txt" onfocus="change(txt)" onblur="compare(txt)"/>
<input type="hidden" id="hdtxt"/>
<script type="text/javascript">
function change(idnum){
document.getElementById('hdtxt').value=idnum.value;
}
function compare(idnum){
if(document.getElementById('hdtxt').value!=idnum.value){
alert("有未保存的修改!")
}
}
</script>
<input type="hidden" id="hdtxt"/>
<script type="text/javascript">
function change(idnum){
document.getElementById('hdtxt').value=idnum.value;
}
function compare(idnum){
if(document.getElementById('hdtxt').value!=idnum.value){
alert("有未保存的修改!")
}
}
</script>
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