Home Web Front-end JS Tutorial js/jquery obtains the height and width of the browser window's visible area and the scroll bar height implementation code

js/jquery obtains the height and width of the browser window's visible area and the scroll bar height implementation code

Jan 11, 2017 am 09:39 AM

Get the height and width of the visible area of ​​the browser window. Friends who need the height of the scroll bar can refer to it.
In IE, the browser display window size can only be obtained as follows: Copy the code as follows

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document.body.offsetWidth

document.body.offsetHeight

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In browsers that declare DOCTYPE, you can use the following to obtain the browser display window size: Copy the code as follows Code

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document.documentElement.clientWidth

document.documentElement.clientHeight

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IE, FF, and Safari all support this method. Although opera supports this attribute, it returns the page size;
At the same time, all browsers except IE save this information in the window Object, you can use the following to obtain: The code is as follows Copy the code

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window.innerWidth

window.innerHeight

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The general method of obtaining the size of the entire web page The code is as follows Copy the code

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document.body.scrollWidth

document.body.scrollHeight

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The general method of obtaining the screen resolution height The code is as follows Copy the code

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window.screen.height

window.screen.width

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Summarize the examples

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function getViewSizeWithoutScrollbar(){//不包含滚动条

return {

width : document.documentElement.clientWidth,

height: document.documentElement.clientHeight

}

}

function getViewSizeWithScrollbar(){//包含滚动条

if(window.innerWidth){

return {

width : window.innerWidth,

height: window.innerHeight

}

}else if(document.documentElement.offsetWidth == document.documentElement.clientWidth){

return {

width : document.documentElement.offsetWidth,

height: document.documentElement.offsetHeight

}

}else{

return {

width : document.documentElement.clientWidth + getScrollWith(),

height: document.documentElement.clientHeight + getScrollWith()

}

}

}

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The differences between IE and FireFox are as follows:
IE6.0, FF1.06+:

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clientWidth = width + padding

clientHeight = height + padding

offsetWidth = width + padding + border

offsetHeight = height + padding + border

IE5.0/5.5:

clientWidth = width - border

clientHeight = height - border

offsetWidth = width

offsetHeight = height

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Attached is the most commonly used method for obtaining the full page width and height. Method (requires jquery framework) The code is as follows Copy the code

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$(document).width() < $(&#39;body&#39;).width() ? $(document).width() : $(&#39;body&#39;).width();

$(document).height() < $(&#39;body&#39;).height() ? $(document).height() : $(&#39;body&#39;).height();

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alert($(window).height()); //The height of the visible area of ​​the current window of the browser
alert($(document). height()); //The height of the browser's current window document
alert($(document.body).height()); //The height of the browser's current window document body
alert($(document. body).outerHeight(true)); //The total height of the browser's current window document body includes border padding margin
alert($(window).width()); //The browser's current window visible area width
alert($(document).width());//The browser’s current window document object width
alert($(document.body).width());//The browser’s current window document body Height
alert($(document.body).outerWidth(true));//The total width of the browser's current window document body includes border padding margin

alert($(document).scrollTop() ); //Get the vertical height of the scroll bar to the top
alert($(document).scrollLeft()); //Get the vertical width of the scroll bar to the left

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