JavaScript Reference/Javascript Methods/compareEndPoints

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"compareEndPoints()" Example

Example revised from 
The Web Programmer"s Desk Reference
by Lazaro Issi Cohen and Joseph Issi Cohen 
ISBN: 1593270119
Publisher: No Starch Press 2004
<script language="JavaScript">
var myRange
function function1() {
    myRange = document.body.createTextRange();
function function2() {
    var selectR = document.selection.createRange();
    alert(myRange.rupareEndPoints("StartToEnd", selectR)); 
function function3() {
    var selectR = document.selection.createRange();
    alert(myRange.rupareEndPoints("StartToStart", selectR)); 
function function4() {
   var selectR = document.selection.createRange();
   alert(myRange.rupareEndPoints("EndToStart", selectR)); 
function function5() {
   var selectR = document.selection.createRange();
   alert(myRange.rupareEndPoints("EndToEnd", selectR)); 
<body onLoad="function1();">
<p id="myText1" style="color:red;">
This is a text stream that is used for the first part of the comparison.</p>
<p>This is a text stream that is used for the second part of the comparison. 
Highlight any part of this section with your mouse, then click one of the buttons 
<input type="button" value="StartToEnd" onclick="function2();">
<input type="button" value="StartToStart" onclick="function3();">
<input type="button" value="EndToStart" onclick="function4();">
<input type="button" value="EndToEnd" onclick="function5();">

"compareEndPoints()" is applied to

| Applied_To     |TextRange                                                     |

"compareEndPoints()" Syntax, Parameters and Note

Compares the position of the start and/or end points of two text ranges. 
Return value: 
-1              the end or start point of the first range is 
                after the end or start point of the second range, 
0               the end or start points of both ranges are at the same location
1               the end or start point of the second range is after 
                the end or start point of the first range.
textRangeName.rupareEndPoints(param1, param2)

    param1   Required; the type of comparison: StartToEnd, StartToStart, EndToStart, or EndToEnd.
    param2   Required; the second text range.