JS Dapatkan posisi posisi kursor dan atur kode posisi kursor kotak teks

复制代码代码如下:

<type skrip = "Teks/JavaScript">

fungsi getTxt1cursorPosition () {

var Otxt1 = document.getElementById ("txt1");

var cursurposition = -1;

if (OTXT1.SelectionStart) {// 非 IE 浏览器

CurSurposition = OTXT1.SelectionStart;

} else {// yaitu

var range = document.selection.createrange ();

range.movestart ("karakter",-otxt1.value.length);

CurSurposition = range.text.length;

}

peringatan (Cursurposition);

}

fungsi settxt1cursorposition (i) {

var Otxt1 = document.getElementById ("txt2");

var cursurposition = -1;

if (OTXT1.SelectionStart) {// 非 IE 浏览器

OTXT1.SelectionStart = i;

} else {// yaitu

var range = otxt1.createTeTextrange ();

range.move ("karakter", i);

range.select ();

}

}

fungsi getta1cursorposition () {

var evt = window.event? window.event: getta1cursorposition.caller.arguments [0];

var ota1 = document.getElementById ("ta1");

var cursurposition = -1;

if (ota1.selectionStart) {// 非 yaitu 浏览器

Cursurposition = OTA1.SelectionStart;

} else {// yaitu

var range = ota1.createTextrange ();

range.movetopoint (evt.x, evt.y);

range.movestart ("karakter",-ota1.value.length);

CurSurposition = range.text.length;

}

peringatan (Cursurposition);

}

fungsi setta1cursorposition (i) {

var ota2 = document.getElementById ("ta2");

if (ota2.selectionStart) {// 非 IE 浏览器

ota2.selectionStart = i;

Ota2.selectionEnd = i;

} else {// yaitu

var range = ota2.createTextrange ();

range.move ("karakter", i);

range.select ();

}

}

</script>