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JS Tools-js Common methods, JS commonly used to judge methods SUMMARY: Copy Code code as follows: function obj$ (ID) Get object based on ID function val$ (ID) Gets the value of an object based on the ID function Trim (str) remove left

Copy Code code as follows: Copy Code code as follows: Query area Jiang ' an Jianghan District Qiaokou District Dongxihu District Hanyang District Wuhan jing Kai Wuchang District

The first one: Copy Code code as follows: function Checkreg () { Verify the phone number of the phone number, including section 153,159 if (document.form.phone.value== "" && document.form.usermobile.value== "") { Alert ("Phone number

The data that is dynamically output on the page, this is the data that Ajax obtains I want to show on the page Copy Code code as follows: Success:function (data) { var arr = Data.split ('_'); var Numarr = Arr[0].split (","); var

In most people's eyes, the technical curtilage gives the impression that the person is taciturn, always can not penetrate what he thought in mind, keep each other distance. As half of the programmers, I think the real technical house most of the

1. When you enter a point in the Select Input box, the option to find the options that match the content is displayed in the option's previous options. 2. How to get the content of each input and trigger the function when KeyUp. Question: Can I

Copy Code code as follows: How to export a web page to an Excel document How a Web page is exported as an Excel document Column Heading 1 Column Heading 2 Column Heading 3 Column Heading 4

Because the project needs! Need script to judge size and file type on client! I find information on the Internet to find a good hard work! Simply write yourself a and test file upload size limit An example, compatible with IE6,IE7,IE8, Google Chrome,

1. Create a Select dynamically Copy Code code as follows: function Createselect () { var myselect = document.createelement_x ("select");Myselect.id = "Myselect";Document.body.appendChild (Myselect);} 2. Add Options option

But limited by the browser, in many cases we can only give a link, let the user click Open-"Save As." This link is as follows: Copy Code code as follows: file.js When the user clicks on the link, the browser opens and

Microblogging or forum on the common effect, the choice of expression inserted into the Text field, the display is similar to [haha] such a string, the following is the expression string into a picture of the expression of a way Copy Code code

Text boxes, radio buttons, check boxes, related actions Copy Code code as follows: var sex=$ ("Input[name= ' Sex ']:checked"). Val (); Gets the value of a set of radio selected items var item=$ ("#sel option:selected"). Text (); Gets the

The IFRAME child page communicates with the parent page depending on whether the SRC attribute in the IFRAME is linked by domain or cross-domain, and the mode of communication is different. I. Communication of parent-child pages under the same

If the following question is implemented under different conditions (add_step changes), the add_level result values are different: Copy Code code as follows: var add_level = 0; if (Add_step = = 5) { Add_level = 1; } else if

HTML () method This method is similar to the innerHTML property in JavaScript, and can be used to read or set HTML content in an element. To get the contents of an element, you can do this: Copy Code code as follows: var p_html = $

Web page on the right hover QQ online customer service Code Copy Code code as follows: function MyEvent (OBJ,EV,FN) { if (obj.attachevent) { Obj.attachevent (' on ' +ev,fn); }else{ Obj.addeventlistener (Ev,fn,false); }; };

JS weak type makes people feel a lot of things are more confused, for example, if a variable is true or false in the IF condition, type conversion is required if a non-Boolean variable in a strongly typed language is placed in the IF condition, but

HTML () method This method is similar to the innerHTML property in JavaScript, and can be used to read or set HTML content in an element. To get the contents of an element, you can do this: var p_html = $ ("P"). html (); Get the HTML code

New Array () New Array (len) New Array ([item0,[item1,[item2,...]]] Methods for using Array objects: var objarray=new Array (); Objarray.concact ([item1[,item2[,....]]] -------------------The argument list is connected to the back of the Objarray to

In front-end development work, it is often necessary to escape the left and right angle brackets of HTML into solid form. We can not put ,& and so on directly in the final view of the page. It needs to be escaped before it can be displayed on the