JS method to determine collision_javascript skills

The example in this article describes the method of determining collision in JS. Share it with everyone for your reference. The details are as follows:

JS collision method:

Copy code The code is as follows:

/**Determine whether there is a collision
* @param obj original object
* @param dobj target object
​*/
function impact(obj, dobj) {
var o = {
          x: getDefaultStyle(obj, 'left'),
      y: getDefaultStyle(obj, 'top'),
           w: getDefaultStyle(obj, 'width'),
h: getDefaultStyle(obj, 'height')
}  

var d = {
          x: getDefaultStyle(dobj, 'left'),
      y: getDefaultStyle(dobj, 'top'),
           w: getDefaultStyle(dobj, 'width'),
h: getDefaultStyle(dobj, 'height')
}  

var px, py;

px = o.x <= d.x ? d.x : o.x;
py = o.y <= d.y ? d.y : o.y;

// Determine whether the points are in both objects
if (px >= o.x && px <= o.x o.w && py >= o.y && py <= o.y o.h && px >= d.x && px <= d.x d.w && py >= d.y && py < = d.y d.h) {
         return true;                               } else {
          return false;                                }  
}

/**Get object properties
* @param obj Object
* @param attribute attribute
​*/
function getDefaultStyle(obj, attribute) {
Return parseInt(obj.currentStyle ? obj.currentStyle[attribute] : document.defaultView.getComputedStyle(obj, false)[attribute]);
}

An example is as follows:

Copy code The code is as follows:

 
 
  
   
   
  
  
 

 
   

 
   

 
 

 
  
  

希望本文所述对大家的javascript程序设计有所帮助。

Statement：

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn