| ;(function ($) {
/*
* Text field cursor operation (SELECT, add, delete, take)
*/
$.fn.extend ({
/*
* Get the cursor location
*/
Igetfieldpos:function () {
var field=this.get (0);
if (document.selection) {
Ie
$ (this). focus ();
var sel=document.selection;
var range=sel.createrange ();
var duprange=range.duplicate ();
Duprange.movetoelementtext (field);
Duprange.setendpoint (' endtoend ', range);
Field.selectionstart=duprange.text.length-range.text.length;
field.selectionend=field.selectionstart+ range.text.length;
}
return field.selectionstart;
},
/*
* Select the character in the specified position | | Set cursor position
*---is selected from Start (with start) and ends at end (excluding the first)
*---If you do not enter the end value, that is to set the position of the cursor (first word end-of-file)
*/
Iselectfield:function (start,end) {
var field=this.get (0);
End is undefined, set the cursor position
if (arguments[1]==undefined) {
End=start;
}
if (document.selection) {
Ie
var range = Field.createtextrange ();
Range.moveend (' character ',-$ (This). Val (). length);
Range.moveend (' character ', end);
Range.movestart (' character ', start);
Range.Select ();
}else{
Non IE
Field.setselectionrange (Start,end);
$ (this). focus ();
}
},
/*
* Select the specified string
*/
Iselectstr:function (str) {
var field=this.get (0);
var i=$ (this). Val (). indexOf (str);
I!=-1? $ (this). Iselectfield (I,i+str.length): false;
},
/*
* Inserts a string after the cursor
*/
Iaddfield:function (str) {
var field=this.get (0);
var v=$ (this). Val ();
var len=$ (this). Val (). length;
if (document.selection) {
Ie
$ (this). Focus ()
Document.selection.createRange (). Text=str;
}else{
Non IE
var Selpos=field.selectionstart;
$ (this). Val ($ (this). Val (). Slice (0,field.selectionstart) +str+$ (This). Val (). Slice (Field.selectionstart,len));
This.iselectfield (selpos+str.length);
};
},
/*
* Delete n characters in front (-) or back (+) of the cursor
*/
Idelfield:function (n) {
var field=this.get (0);
var pos=$ (this). Igetfieldpos ();
var v=$ (this). Val ();
Greater than 0 deletes the following, less than 0 deletes the preceding
$ (this). Val (n>0 v.slice (0,pos-n) +v.slice (POS): V.slice (0,pos) +v.slice (pos-n));
$ (this). Iselectfield (pos-(n<0.0:n));
}
});
}) (JQuery); |
