我试图设置一个变量并将其上传到数据库中，具体取决于页面上显示的文本。我正在使用一个简单的if ... then在javascript中表示变量未定义。还有另一种设置变量的方法吗？
<script type="text/javascript">
oldTextAry = new Array();
function changeText (fieldObj, newTexStr) {
if (newTexStr == fieldObj.innerHTML) {
fieldObj.innerHTML = oldTextAry[fieldObj.id];
var waswere = 1;
} else {
oldTextAry[fieldObj.id] = fieldObj.innerHTML;
fieldObj.innerHTML = newTexStr;
var waswere = 2;
}
}
function displayWasWere () {
document.write(waswere);
}
</script>
和HTML：
<HTML>
<a href="#" onclick="changeText(this,'were');" id="text1link">was</a><br/>
<a href="#" onClick="displayWasWere();" id="waswere" name="waswere">show variable</a>
</HTML>
最佳答案
使waswere作为全局变量：
var waswere;
oldTextAry = new Array();
function changeText (fieldObj, newTexStr) {
if (newTexStr == fieldObj.innerHTML) {
fieldObj.innerHTML = oldTextAry[fieldObj.id];
waswere = 1;
} else {
oldTextAry[fieldObj.id] = fieldObj.innerHTML;
fieldObj.innerHTML = newTexStr;
waswere = 2;
}
}
function displayWasWere () {
document.write(waswere);
}