The example in this article describes the method of javascript realizing web page character positioning. Share it with everyone for your reference. The details are as follows:
Here you enter the string to be queried, and after clicking the position, the program will automatically jump to the matching position
<html>
<form name="f1" action=""
onSubmit="if(this.t1.value!=null && this.t1.value!='')
findString(this.t1.value);return false">
<input type="text" name=t1 value="" size=20>
<input type="submit" name=b1 value="Find">
</form>
<p>
导读：11月2日，美国将举行中期选举，众议院国会议员将全部改选，参议院改选1/3，一些州也将进行州长选举。奥巴马能否令心怀不满的选民支持民主党，支撑民主党统治，尚不得而知
</p>
<script language="JavaScript">
<!--
var TRange=null
function findString (str) {
if (parseInt(navigator.appVersion)<4) return;
var strFound;
if (window.find) {
// CODE FOR BROWSERS THAT SUPPORT window.find
strFound=self.find(str);
if (strFound && self.getSelection && !self.getSelection().anchorNode) {
strFound=self.find(str)
}
if (!strFound) {
strFound=self.find(str,0,1)
while (self.find(str,0,1)) continue
}
}
else if (navigator.appName.indexOf("Microsoft")!=-1) {
// EXPLORER-SPECIFIC CODE
if (TRange!=null) {
TRange.collapse(false)
strFound=TRange.findText(str)
if (strFound) TRange.select()
}
if (TRange==null || strFound==0) {
TRange=self.document.body.createTextRange()
strFound=TRange.findText(str)
if (strFound) TRange.select()
}
}
else if (navigator.appName=="Opera") {
alert ("Opera browsers not supported, sorry...")
return;
}
if (!strFound) alert ("String '"+str+"' not found!")
return;
}
//-->
</script>
</html>
I hope this article will be helpful to everyone’s JavaScript programming design.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
