Js fails to send a post request to php. how can this problem be solved?

Js fails to send the post request to php. the function & nbsp; alertWin (title, & nbsp; msg, & nbsp; w, & nbsp; h) & nbsp ;{& nbsp; & nbsp; var & nbsp; titleheight & nbsp; 22px; & nb js failed to send post request to php.

Function alertWin (title, msg, w, h ){
Var titleheight = "22px"; // window title height
Var bordercolor = "#666699"; // border color of the window
Var titlecolor = "# FFFFFF"; // The Title color of the window.
Var titlebgcolor = "#666699"; // The background color of the window title
Var bgcolor = "# FFFFFF"; // content background color
Var iWidth = document.doc umentElement. clientWidth; // The width of the window.
Var iHeight = document.doc umentElement. clientHeight; // The height of the window.
// Create a pop-up layer
Var msgObj = document. createElement ("p ");
// Set the pop-up layer style
MsgObj.style.css Text = "position: absolute; font: 11px ''; top:" + (iHeight-h)/2 + "px; left:" + (iWidth-w) /2 + "px; width:" + w + "px; height:" + h + "px; text-align: center; border: 1px solid" + bordercolor + "; background-color: "+ bgcolor +"; padding: 1px; line-height: 22px; z-index: 1001 ;";
Document. body. appendChild (msgObj );
// Create a table to accommodate content on the layer
Var table = document. createElement ("table ");
// Place the Table on the pop-up layer
MsgObj. appendChild (table );
// Set the table format
Table.style.css Text = "margin: 0px; border: 0px; padding: 0px ;";
Table. cellSpacing = 0;
// Insert a row to display the title
Var tr = table. insertRow (-1 );
// Insert a cell to hold the title
Var titleBar = tr. insertCell (-1 );
TitleBar.style.css Text = "width: 100%; height:" + titleheight + "px; text-align: left; padding: 3px; margin: 0px; font: bold 13px ' '; color: "+ titlecolor +"; border: 1px solid "+ bordercolor +"; cursor: move; background-color: "+ titlebgcolor;
TitleBar. style. paddingLeft = "10px ";
// Set the title
TitleBar. innerHTML = title;
// Close button event
Var closeBtn = tr. insertCell (-1 );
CloseBtn.style.css Text = "cursor: pointer; text-align: right; padding: 2px; background-color:" + titlebgcolor;
CloseBtn. innerHTML = "× ";
CloseBtn. onclick = function (){
Document. body. removeChild (msgObj );
}
// Pop-up message window content
Var msgBox = table. insertRow (-1). insertCell (-1 );
MsgBox.style.css Text = "font: 10pt '';";
MsgBox. colSpan = 2;
MsgBox. innerHTML = msg;
Var nameBox1 = table. insertRow (-1 );
Var nameLable1 = nameBox1.insertCell (-1 );
NameLable1.style.css Text = "font: 10pt ''; text-align: center ;";
NameLable1.innerHTML ="Mobile phone*";

Var nameBox2 = table. insertRow (-1 );
Var nameLable2 = nameBox2.insertCell (-1 );
NameLable2.style.css Text = "font: 10pt ''; text-align: center ;";
NameLable2.innerHTML ="Verification code";
        
Var nameBox3 = table. insertRow (-1 );
Var nameLable3 = nameBox3.insertCell (-1 );
NameLable3.style.css Text = "font: 10pt ''; text-align: center ;";
NameLable3.innerHTML ="";
}

Function get_mobile_code (){
Alert ("111 ");
$. Post ('http: // '+ serverIp + 'smsexecute. php ', {mobile: jQuery. trim ($ ('# mobile '). val (), send_code:
 }, Function (msg ){
Alert (jQuery. trim (unescape (msg )));
});
Alert ("222 ");
}

------ Solution ----------------------
Send_code :' '}

Check that jQuery is loaded correctly.
------ Solution ----------------------
Reference:

Quote: reference:

Check whether session_start () is used. then, the key value passed in braces must be enclosed in quotation marks.

Bytes -------------------------------------------------------------------------------------------------------------
Session_start () is available. The quotation marks do not work either: {"mobile": jQuery. trim ($ ('# mobile'). val (), "send_code ": }

When you right-click to view the source code, is the php script correctly parsed? This is critical.