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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>测试</title>
<script type="text/javascript">
window.onload = function() {
var Text1 = document.getElementById('Text1');
Text1.onchange = function() {
var readOnly = Text1.value === '' ? false : true;
document.getElementById('Text2').readOnly = readOnly;
document.getElementById('Text3').readOnly = readOnly;
document.getElementById('Text4').readOnly = readOnly;
if (Text1.value !== '') {
document.getElementById('span1').innerHTML = Text1.value;
}
};
}
</script>
</head>
<body>
<input id="Text1" type="text">
<input id="Text2" type="text">
<input id="Text3" type="text">
<input id="Text4" type="text">
<span id="span1">往哪传值</span>
</body>
</html>