我求救。在下面的代碼中,當選擇兩個對象時出現一條線。我需要一個函數,只要我們有一個完整的循環,就會停止整個過程。我的意思是,當我們從一個對象開始,經歷所有這些對象,並且一旦我們回到對象上並且它成爲一行的結尾,整個事情就會凍結並出現文本。我是一名新秀,我真的無法靠自己做到。 非常感謝。在某一點停止功能Javascript
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<style type="text/css">
img {
padding: 1px;
margin: 2px;
float: left;
background-color: #99BC99
}
img.selected {
padding: 2px;
margin: 4px;
background-color: #E13300
}
</style>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('img').click(function(){
var $elem1 = $(this).parent();
var $elem2 = $('span.last');
$(this).toggleClass('selected');
if ($elem2.length > 0) {
connect($elem1[0], $elem2[0], "#0F0", 5);
} else { $elem1.addClass('last'); }
$('span').removeClass('last');
$elem1.addClass('last');
});
});
function connect(div1, div2, color, thickness) {
var off1 = getOffset(div1);
var off2 = getOffset(div2);
// bottom right
var x1 = off1.left + off1.width;
var y1 = off1.top + off1.height;
// top right
var x2 = off2.left + off2.width;
var y2 = off2.top;
// distance
var length = Math.sqrt(((x2-x1) * (x2-x1)) + ((y2-y1) * (y2-y1)));
// center
var cx = ((x1 + x2)/2) - (length/2);
var cy = ((y1 + y2)/2) - (thickness/2);
// angle
var angle = Math.atan2((y1-y2),(x1-x2))*(180/Math.PI);
// make hr
var htmlLine = "<div style='padding:0px; margin:0px; height:" + thickness + "px; background-color:" + color + "; line-height:1px; position:absolute; left:" + cx + "px; top:" + cy + "px; width:" + length + "px; -moz-transform:rotate(" + angle + "deg); -webkit-transform:rotate(" + angle + "deg); -o-transform:rotate(" + angle + "deg); -ms-transform:rotate(" + angle + "deg); transform:rotate(" + angle + "deg);' />";
$('body').append($(htmlLine));
}
function getOffset(el) {
var _x = 0;
var _y = 0;
var _w = el.offsetWidth|0;
var _h = el.offsetHeight|0;
while(el && !isNaN(el.offsetLeft) && !isNaN(el.offsetTop)) {
_x += el.offsetLeft - el.scrollLeft;
_y += el.offsetTop - el.scrollTop;
el = el.offsetParent;
}
return { top: _y, left: _x, width: _w, height: _h };
}
window.testIt = function() {
var div1 = document.getElementById('div1')
var div2 = document.getElementById('div2')
connect(div1, div2, "#0F0", 5);
}
</script>
</head>
<body>
<script type="text/javascript">
</script>
<span style="position: absolute; left: 933px; top: 211px;"> <img src="Untitled-2.jpg" alt="" width="35" height="35" id="div1"/></span>
<span style="position: absolute; left: 304px; top: 190px;"> <img src="Untitled-3.jpg" alt="" width="35" height="35" id="div2"/></span>
<span style="position: absolute; left: 756px; top: 264px;"> <img src="Untitled-4.jpg" alt="" width="35" height="35" id="div3"/></span>
<span style="position: absolute; left: 365px; top: 395px;"> <img src="Untitled-6.jpg" alt="" width="35" height="35" id="div4"/></span>
<span style="position: absolute; left: 129px; top: 302px;"> <img src="Untitled-5.jpg" alt="" width="35" height="35" id="div5"/></span>
<span style="position: absolute; left: 504px; top: 261px;"> <img src="Untitled-7.jpg" alt="" width="35" height="35" id="div6"/></span>
<span style="position: absolute; left: 650px; top: 393px;"> <img src="Untitled-8.jpg" alt="" width="35" height="35" id="div7"/></span>
<span style="position: absolute; left: 283px; top: 26px;"> <img src="Untitled-9.jpg" alt="" width="35" height="35" id="div8"/></span>
<span style="position: absolute; left: 593px; top: 35px;"> <img src="Untitled-10.jpg" alt="" width="35" height="35" id="div9"/></span>
<span style="position: absolute; left: 784px; top: 42px;"> <img src="Untitled-1.jpg" alt="" width="35" height="35" id="div10"/></span>
</body>
</html>
您可以在您想要停止執行的該行使用'return'。 – Jai
用戶點擊一個圖像(稱之爲「家」),然後點擊另一個圖像,並在它們之間畫一條線。用戶繼續點擊圖像,直到用戶再次點擊「家」。那時你想做點什麼。它是否正確? – TimSPQR
這是正確的!我沒有表現得很好 – user3095198